Kw has v2 with 19"x10" ET 25

[Jonb70]

Curious how I can expect the fitment to be with my new setup? Planning on running a squared 275/35/19 tire setup. Should I expect fitment issues? Will a 5mm spacer be necessary?
TIA!

[MineralWhiteF80]

I cannot back up what I'm about to say with facts at this time, but I'm almost positive you will need a 5mm spacer to fit a 10" +25 wheel with the KW HAS system. I know I need a 5mm spacer to fit that size with my KW V3 coilovers.

What I really want to say, is that a 275/35/19 tire on the front axle is too big in diameter. A 26.6" diameter front tire will rub both front and rear of the front fender liners. Ideally, you should consider a tire that has a 26.3" or smaller diameter for rub-free fitment when turning.

I am able to test fit on my car a 19x10" +25 and +20 with a 275/35/19 Michelin PS4S to see how actual fitment is, but I dont know when Ill get around to actually doing that.

[Jonb70]

Originally Posted by MineralWhiteF80

I cannot back up what I'm about to say with facts at this time, but I'm almost positive you will need a 5mm spacer to fit a 10" +25 wheel with the KW HAS system. I know I need a 5mm spacer to fit that size with my KW V3 coilovers.

What I really want to say, is that a 275/35/19 tire on the front axle is too big in diameter. A 26.6" diameter front tire will rub both front and rear of the front fender liners. Ideally, you should consider a tire that has a 26.3" or smaller diameter for rub-free fitment when turning.

I am able to test fit on my car a 19x10" +25 and +20 with a 275/35/19 Michelin PS4S to see how actual fitment is, but I dont know when Ill get around to actually doing that.

I appreciate the knowledge I reached out to apex wheels and they essentially said the same thing as you. I appreciate it!

[Groganrocket]

I’m running 20x10 et 20 v2 kw has 275/30/20 no issues

[Jonb70]

Originally Posted by Groganrocket

I’m running 20x10 et 20 v2 kw has 275/30/20 no issues

What’s your ride height at? Do you have a pic

[Groganrocket]

I will send pic after I get off work.

[HONGCHUMZI]

KW V3 with Apex EC-7 19x10 et25, 275 35 19 PS5 Square.

[Jonb70]

Originally Posted by HONGCHUMZI

KW V3 with Apex EC-7 19x10 et25, 275 35 19 PS5 Square.

Any spacers and do you rub? Ideally I’d like my car to sit a little lower so I think I’m gonna go with a 275/30 to increase fender liner clearance.

[HONGCHUMZI]

Originally Posted by Jonb70

Any spacers and do you rub? Ideally I’d like my car to sit a little lower so I think I’m gonna go with a 275/30

Spacers are not used.
At first, the tire rubbed the cover, but after adjusting the height, it doesn't rub.
My recommendation is to use a 5mm spacer and 275 30 or 265 35. It's better if you adjust the camber.

[M3SQRD]

Originally Posted by Jonb70

Any spacers and do you rub? Ideally I’d like my car to sit a little lower so I think I’m gonna go with a 275/30

Why would you use the tire diameter to adjust ride height? 275/30-19 has a diameter that’s even smaller than the stock 255/35-19. Also, if you’re a stance guy, the smaller diameter 275/30-19 will add 0.5” to the tire-to-fender gap compared to the 275/35-19 shown above. What size rear tire do you plan on running?

[Jonb70]

Originally Posted by M3SQRD

Why would you use the tire diameter to adjust ride height? 275/30-19 has a diameter that’s even smaller than the stock 255/35-19. Also, if you’re a stance guy, the smaller diameter 275/30-19 will add 0.5” to the tire-to-fender gap compared to the 275/35-19 shown above. What size rear tire do you plan on running?

I’m not using a tire to adjust ride height. I want to run a squared setup 19 x10 et 25 with 275/30/19 tires. Ride height wise I just want to eliminate fender gap using kw has kit. I should be fine as long as I have a 5mm spacer in the front. The reason for going to a 30 sidewall is to give a bit more clearance to my fender liner.

[M3SQRD]

Originally Posted by Jonb70

I’m not using a tire to adjust ride height. I want to run a squared setup 19 x10 et 25 with 275/30/19 tires. Ride height wise I just want to eliminate fender gap using kw has kit. I should be fine as long as I have a 5mm spacer in the front. The reason for going to a 30 sidewall is to give a bit more clearance to my fender liner.

Then what does “Ideally I’d like my car to sit a little lower so I think I’m gonna go with a 275/30” mean? Sure sounds like you want to run your car lower wrt the ground. This car needs more than a 275 square setup to improve handling and support the weight. What brand 275 tire?

All of the HAS kits lowers the car too much and running a smaller diameter tire than stock means you’ll have to lower the car even more to eliminate the fender gap. BMW uses limited front suspension travel and controls travel with bump stops. Lowering the car more than 10 mm means you’ll be riding the bump stops more frequently as well as getting into the more progressive portion of the bump stop’s stiffness curve. Also, dialing in considerable front rake, for looks, not performance, shifts the handling balance towards oversteer. You’ll have very little suspension travel with your stance front ride height.

[Jonb70]

Originally Posted by M3SQRD

Then what does “Ideally I’d like my car to sit a little lower so I think I’m gonna go with a 275/30” mean? Sure sounds like you want to run your car lower wrt the ground. This car needs more than a 275 square setup to improve handling and support the weight. What brand 275 tire?

All of the HAS kits lowers the car too much and running a smaller diameter tire than stock means you’ll have to lower the car even more to eliminate the fender gap. BMW uses limited front suspension travel and controls travel with bump stops. Lowering the car more than 10 mm means you’ll be riding the bump stops more frequently as well as getting into the more progressive portion of the bump stop’s stiffness curve. Also, dialing in considerable front rake, for looks, not performance, shifts the handling balance towards oversteer. You’ll have very little suspension travel with your stance front ride height.

As I just said in my last reply the purpose of running a 30 over a 35 sidewall is to have more fender liner clearance. You clearly have more knowledge on the topic than I do so I greatly appreciate your input. This is my first car that I am trying to dial in a suspension setup.

With that being said in a perfect world I want to close my fender gap, retain as much clearance to the ground as possible, improve cornering, and keep the rear end playful enough to slide.

My solution: kw has (coilovers aren’t in the budget but I’m open to springs),and a squared wheel setup.
19”x10” et25 wheels with a 5mm spacer in the front, and 275/30/19 ps4s tires

I’d greatly appreciate your input and suggestions as to what the perfect setup would be!

[M3SQRD]

Originally Posted by Jonb70

As I just said in my last reply the purpose of running a 30 over a 35 sidewall is to have more fender liner clearance. You clearly have more knowledge on the topic than I do so I greatly appreciate your input. This is my first car that I am trying to dial in a suspension setup.

With that being said in a perfect world I want to close my fender gap, retain as much clearance to the ground as possible, improve cornering, and keep the rear end playful enough to slide.

My solution: kw has (coilovers aren’t in the budget but I’m open to springs),and a squared wheel setup.
19”x10” et25 wheels with a 5mm spacer in the front, and 275/30/19 ps4s tires

I’d greatly appreciate your input and suggestions as to what the perfect setup would be!

The HAS options are better than lowering springs because you control the max drop. Some can get close to stock height so you can control the min drop, too. Also, they allow you to corner balance the car (highly recommend having this done by a reputable race/service shop). Just don’t lower your car too much with a HAS system.

I’d look into the AST HAS kit as well as KW and MP. Theirs might be the newest released but their products are typically solid. Min drop is 15 mm front and 10 mm rear. I’ve tried to find spring rates of all three HAS systems but I haven’t had much luck finding them. One thing I recommend you do, regardless of which kit you go with, is to install the new bump stops so they’re touching the top of the damper at full droop. If you do this, you can see if you’re riding the bump stops. As the suspension compresses, the bump spring will get pushed up the damper piston rod and if it’s all the way to the top of the piston then you’re riding on the bump stops.

[Jonb70]

Originally Posted by M3SQRD

The HAS options are better than lowering springs because you control the max drop. Some can get close to stock height so you can control the min drop, too. Also, they allow you to corner balance the car (highly recommend having this done by a reputable race/service shop). Just don’t lower your car too much with a HAS system.

I’d look into the AST HAS kit as well as KW and MP. Theirs might be the newest released but their products are typically solid. Min drop is 15 mm front and 10 mm rear. I’ve tried to find spring rates of all three HAS systems but I haven’t had much luck finding them. One thing I recommend you do, regardless of which kit you go with, is to install the new bump stops so they’re touching the top of the damper at full droop. If you do this, you can see if you’re riding the bump stops. As the suspension compresses, the bump spring will get pushed up the damper piston rod and if it’s all the way to the top of the piston then you’re riding on the bump stops.

Yeah I’m pretty set on the KW HAS due to price and reputation. My mechanic is also pretty strict with ordering from turner as he has a good reputation with them and they don’t carry AST. I will definitely tell him about the new bump stops. I do wish spring rates were available on the kits as well.

Do you think I should go with the squared setup and try to run a 275/35 or 275/30?
Or should I scratch the squared setup idea and go 9.5 front and 10.5 rear?

[Jonb70]

Originally Posted by Groganrocket

I’m running 20x10 et 20 v2 kw has 275/30/20 no issues

Pics? And no rubbing?

[MineralWhiteF80]

Originally Posted by Jonb70

Do you think I should go with the squared setup and try to run a 275/35 or 275/30?
Or should I scratch the squared setup idea and go 9.5 front and 10.5 rear?

Im not going to answer for M3SQRD but I can tell you this:

1. If you want to lower your car, a 275/35/19 square setup is going to rub in the front. My 265/35/19 on a 9.5" +16 offset rubs in the front just slightly in some situations. That orange car posted earlier had to raise his car up close to stock (if not stock) height for the 275/35/19 to not rub. If you want that typical lowered look with a one or two-finger gap between the tire and fender, you will be rubbing with a 275/35/19. This is where you should be going with a 275/30/19 tire.

If you don't plan on tracking your car and this is a performance 'street car,' then I suggest going to a staggered setup with a 9.5" front wheel and scrap the square 10" idea. The staggered 9.5 front will easily clear the KW HAS setup, and a 10.5 or 11" rear wheel will accept a 295/30/19 or 305/30/19 tire and give you better traction on the street. The square tire setup becomes really valuable to someone who tracks a lot that is able to extend tire life if the racetrack punishes one corner significantly more than the other three corners. Rotating tires on the street is still valuable, not near as much as during track use.

I agree with M3SQRD that a 275 tire in the rear is simply too skinny to get any kind of traction with this F8x chassis. My car with basic BootMod3 tune and E30 fuel spins the tires in 4th gear from a roll with the stock 275/35/19 tires, for whatever that's worth.

[Jonb70]

Originally Posted by MineralWhiteF80

Im not going to answer for M3SQRD but I can tell you this:

1. If you want to lower your car, a 275/35/19 square setup is going to rub in the front. My 265/35/19 on a 9.5" +16 offset rubs in the front just slightly in some situations. That orange car posted earlier had to raise his car up close to stock (if not stock) height for the 275/35/19 to not rub. If you want that typical lowered look with a one or two-finger gap between the tire and fender, you will be rubbing with a 275/35/19. This is where you should be going with a 275/30/19 tire.

If you don't plan on tracking your car and this is a performance 'street car,' then I suggest going to a staggered setup with a 9.5" front wheel and scrap the square 10" idea. The staggered 9.5 front will easily clear the KW HAS setup, and a 10.5 or 11" rear wheel will accept a 295/30/19 or 305/30/19 tire and give you better traction on the street. The square tire setup becomes really valuable to someone who tracks a lot that is able to extend tire life if the racetrack punishes one corner significantly more than the other three corners. Rotating tires on the street is still valuable, not near as much as during track use.

I agree with M3SQRD that a 275 tire in the rear is simply too skinny to get any kind of traction with this F8x chassis. My car with basic BootMod3 tune and E30 fuel spins the tires in 4th gear from a roll with the stock 275/35/19 tires, for whatever that's worth.

I really appreciate your response. So I think I’m going to change the setup to
Front: 19x9.5 et22 with a 265/35r19
Rear: 19x11 et41 with a 295/35r19.
This should avoid all fitment issues correct?

[M3SQRD]

Originally Posted by Jonb70

I really appreciate your response. So I think I’m going to change the setup to
Front: 19x9.5 et22 with a 265/35r19
Rear: 19x11 et41 with a 295/35r19.
This should avoid all fitment issues correct?

MineralWhiteF80

I agree with everything MineralWhiteF80 posted. I have two track setups: 18x10.5et36 (15 mm F spacer) with 295/30 square and (2) 19x10et20 with 285/295 + 19x11et42 with 305. I actually prefer the staggered track setup over the square track setup. I’m able to put more power down (gts level tune) sooner. I have one street setup (well, actually four sets , yes I have a wheel problem and I justify it by telling my wife just like she needs new shoes, my car needs new “shoes”, too!): HRE R101LW 19x9.5et22 with 265/35 + 19x11et42 with 305/30.

[Jonb70]

Originally Posted by M3SQRD

MineralWhiteF80

I agree with everything MineralWhiteF80 posted. I have two track setups: 18x10.5et36 (15 mm F spacer) with 295/30 square and (2) 19x10et20 with 285/295 + 19x11et42 with 305. I actually prefer the staggered track setup over the square track setup. I’m able to put more power down (gts level tune) sooner. I have one street setup (well, actually four sets , yes I have a wheel problem and I justify it by telling my wife just like she needs new shoes, my car needs new “shoes”, too!): HRE R101LW 19x9.5et22 with 265/35 + 19x11et42 with 305/30.

MineralWhiteF80
Thank you both for your inputs. I am going with the staggered setup!
19x9.5 et22 with a 265/35r19
19x11 et41 with a 295/35r19
I will report back with photos in about a month!

[MineralWhiteF80]

Originally Posted by Jonb70

MineralWhiteF80
Thank you both for your inputs. I am going with the staggered setup!
19x9.5 et22 with a 265/35r19
19x11 et41 with a 295/35r19
I will report back with photos in about a month!

I'm going to complicate this even further, but it's worth mentioning.

Have you decided which brand and model tire you are going with?

I ask, because most people lean toward the Michelin PS4S tire. The problem is that a 295/35/19 in this tire has a very narrow tread width and is actually narrower than the 285/35/19 tread width. So, if you plan on choosing the PS4S tire, it would probably be better to go with the 305/30/19 tire (or the 295/30/19 tire as a second option but not ideal).

If you are choosing a tire other than the PS4S, then a 265/35/19 and 295/35/19 tire might be the best idea. You really need to look and compare the actual tread widths provided by the manufacturers to make sure you are getting the best 'bang for your buck' when it comes to tread width. The numbers on the side of the tire usually do not tell the real story.

[Groganrocket]

20x10 et25 on kw has v2