thicker tires for f80 saloon

[Dleenycm3f80]

Whats up ladies an Gents.Im looking to go up to 40 instead of the stock 35's on the front and rear,Does anyone know if that's fine or if i'll be rubbing against the wheel wells or not? I live in NYC and them potholes can be killers, I tend to think the 35 is to low profile for these streets.Any insight or advice would be well appreciated.Thanks a ahead of time and look fwd to your replies.

Dave.

[JoeFromPA]

One of the most common moves is to increase the width of the tire which will simultaneously increase it's height at the same sidewall ratio (i.e. 35).

So, for example, it's common for people with 19" stock wheels to move to 275/35/19 fronts and 295/35/19 rears. This has the effect of increasing the stock sidewall height by ~7mm or about 1/4". And it fits fine stock. And it adds more rubber laterally on the road - which is both a plus and a minus.

[SOLIDM4]

Originally Posted by JoeFromPA

One of the most common moves is to increase the width of the tire which will simultaneously increase it's height at the same sidewall ratio (i.e. 35).

So, for example, it's common for people with 19" stock wheels to move to 275/35/19 fronts and 295/35/19 rears. This has the effect of increasing the stock sidewall height by ~7mm or about 1/4". And it fits fine stock. And it adds more rubber laterally on the road - which is both a plus and a minus.

I would love to see how this looks, do you perhaps have a pic ?

[Dleenycm3f80]

Originally Posted by JoeFromPA

One of the most common moves is to increase the width of the tire which will simultaneously increase it's height at the same sidewall ratio (i.e. 35).

So, for example, it's common for people with 19" stock wheels to move to 275/35/19 fronts and 295/35/19 rears. This has the effect of increasing the stock sidewall height by ~7mm or about 1/4". And it fits fine stock. And it adds more rubber laterally on the road - which is both a plus and a minus.

Do u mind elaborating on the plus and minuses?

[agentrnge]

Curious to what the greatest overall diameter tire you can run as well. 275/35/19 fronts = 26.58 and 295/35/19 rear = 27.13 with is about 1/2" larger than stock, 1/4" additional radius as JoeFromPA said.

I had done the same thing with my E39, I ran Michi PSSes a full series up to give almost 1/2" more radius. No fitment issues even slightly lowered on coilovers. It really soaked up crap NJ roads.

Edit: Pondering 275/40/18 on an 18x9.5 wheel = 26.7", or maybe as far as 255/45/18 on an 18x9 = 27.0" up front for a cold weather set. Too much up front?

[ntg44]

Originally Posted by agentrnge

Pondering 275/40/18 on an 18x9.5 wheel up front = 26.7", and 285/40/18 on 18x10 rears. Too much up front?

I'm running Continental ExtremeContact Sports 265/40/18 front and 285/40/18 rear. Changed everything. Car grips like nuts, even in the cold. Stock PSS tires on this car are garbage compared to the Continentals.

[Circuit Hunter]

Originally Posted by JoeFromPA

One of the most common moves is to increase the width of the tire which will simultaneously increase it's height at the same sidewall ratio (i.e. 35).

So, for example, it's common for people with 19" stock wheels to move to 275/35/19 fronts and 295/35/19 rears. This has the effect of increasing the stock sidewall height by ~7mm or about 1/4". And it fits fine stock. And it adds more rubber laterally on the road - which is both a plus and a minus.

This and also the tire itself plays a factor. Michelin PS4s ride much better than the PSS even at the OE sizes. Instead of the 275/295 i'd recommend a 265/35/19 and 285/35/19.

[agentrnge]

ntgarage44, Circuit Hunter
Thanks for the suggestions and info for alternates over the PSS. I did not plan on running them on the M3. I have Conti EC Sports on the stock 19s as the current summer set. And if I were to replace them it would be something equally grippy, grippier than PSS.
Looking for a cold weather ( no snow duty ) set atm, and was probably going with Mich PS AS3+.

[Dleenycm3f80]

Originally Posted by ntgarage44

I'm running Continental ExtremeContact Sports 265/40/18 front and 285/40/18 rear. Changed everything. Car grips like nuts, even in the cold. Stock PSS tires on this car are garbage compared to the Continentals.

So you put smaller rims on your m3? I thought they all came 19" rims?
I want to do exactly that 265/40/19 front and 285/40/19.Just wondering why u have the 18?

[gatorfast]

Originally Posted by Dleenycm3f80

So you put smaller rims on your m3? I thought they all came 19" rims?
I want to do exactly that 265/40/19 front and 285/40/19.Just wondering why u have the 18?

The M3/4 comes with either 18", 19", or 20" wheels.

[ntg44]

Originally Posted by Dleenycm3f80

So you put smaller rims on your m3? I thought they all came 19" rims?
I want to do exactly that 265/40/19 front and 285/40/19.Just wondering why u have the 18?

I bought mine with the 18 inch wheels, style 513m. I chose those wheels because in my opinion they looked the best by far, and on a more ideological level, I have standard brakes, and I think wheels should be only large enough to clear the front brakes. I even bought 18 inch TE37s, and do not regret my decision at all. I also love the comfort and look of 18 inch wheels and 40 series sidewalls. Love fat tires.

That being said, I think 18s suit the M3 much better than the M4. I can see why someone would go with 19s on the M4, but to me the comp pack 20s are gaudy, just not for me. But that's why there's something for everyone.

[Dleenycm3f80]

Originally Posted by ntgarage44

I bought mine with the 18 inch wheels, style 513m. I chose those wheels because in my opinion they looked the best by far, and on a more ideological level, I have standard brakes, and I think wheels should be only large enough to clear the front brakes. I even bought 18 inch TE37s, and do not regret my decision at all. I also love the comfort and look of 18 inch wheels and 40 series sidewalls. Love fat tires.

That being said, I think 18s suit the M3 much better than the M4. I can see why someone would go with 19s on the M4, but to me the comp pack 20s are gaudy, just not for me. But that's why there's something for everyone.

Would u or anyone here,Cuz BMW wont answer this question.
Can I put 265/40/19 front and 285/40/19 on my m3 and not rub against the wheel well?PLEASE let me know it will be very much appreciated. since I need some all seasons asap.Thanks ahead of time everyone.

[ntg44]

Originally Posted by Dleenycm3f80

Would u or anyone here,Cuz BMW wont answer this question.
Can I put 265/40/19 front and 285/40/19 on my m3 and not rub against the wheel well?PLEASE let me know it will be very much appreciated. since I need some all seasons asap.Thanks ahead of time everyone.

Are you on stock suspension? I really wouldn't recommend going wider and taller. Previous posters just told you that keeping the 35 ratio on a wider tire will raise the height of the tire. Adding profile height as well will increase your radius by a lot, and your speedometer will also be off by a lot.

Could you? maybe. Should you? No, get some 18s if you want to run 40 profile.

[Circuit Hunter]

Originally Posted by Dleenycm3f80

Would u or anyone here,Cuz BMW wont answer this question.
Can I put 265/40/19 front and 285/40/19 on my m3 and not rub against the wheel well?PLEASE let me know it will be very much appreciated. since I need some all seasons asap.Thanks ahead of time everyone.

I wouldn't do that.

[Dleenycm3f80]

for what reason u wouldn't?

[Circuit Hunter]

Much too large.

[SeatownF80]

The rear wheel gap always bothered me because its noticeably wider than the front tires. This post by CanAutM3 explained and helped me a lot in deciding my next tire size.
https://f80.bimmerpost.com/forums/sh....php?t=1089535

[Marcik1]

I've been searching for this too and finally try it myself.

255/40R19 + 275/40/R19 - no rubbing, works very well.

You can feel more sidewall movement and car became more comfortable. It is what i've been looking for winter. It works better on snow/icy road.

Of course on summer tire it doesn't make much sense but if you try to have some more grip in winter condition it works.

(Sorry for pictures quality)

[D_SheerDrivingPleasure]

Originally Posted by Marcik1

I've been searching for this too and finally try it myself.

255/40R19 + 275/40/R19 - no rubbing, works very well.

You can feel more sidewall movement and car became more comfortable. It is what i've been looking for winter. It works better on snow/icy road.

Of course on summer tire it doesn't make much sense but if you try to have some more grip in winter condition it works.

(Sorry for pictures quality)

Nice. What tire is that?