Anyone running 315/30/19 rear tyres on an F80 M3?

[F80M3MattUK]

As above really!

I'm looking to see is anyone is running a 315/30/19 rear tyre on an F80 M3, I'm looking at Apex wheels so would be an 11J ET44 rear wheel I'd be wanting to run it on. Thinking I'd prefer a 315 to a 305 on the rear due to it being fractionally taller and wider while being a slightly better match to the 265/35/19 tyre I will 100% being running on the front diameter wise.

Any pictures or information on if it works or doesn't work would be great!

[TopJimmy]

I'm on a very close setup for my drag set.
Apex 18x11ET44
Hoosier DR2 315/30/18
These fit fine on my F80 M3.
Pix are on my M4 Base.
M3 was sold, but had MP-HAS too!

[F80M3MattUK]

Thanks for that information, no clearance issues with the tyre on the inside or outside? I was hoping Apex might have tried this fitment with the 19's as they have with 18's but sadly it's not one they have tried.

[RevNev]

Originally Posted by F80M3MattUK

As above really!

I'm looking to see is anyone is running a 315/30/19 rear tyre on an F80 M3, I'm looking at Apex wheels so would be an 11J ET44 rear wheel I'd be wanting to run it on. Thinking I'd prefer a 315 to a 305 on the rear due to it being fractionally taller and wider while being a slightly better match to the 265/35/19 tyre I will 100% being running on the front diameter wise.

Any pictures or information on if it works or doesn't work would be great!

I'm running 315/30/19 Cup2's on an M4, wheels are Signature Forged 19 x 11.5 ET45. Front are 265/35/19 on 19 x 9.5 ET20

[F80M3MattUK]

Originally Posted by RevNev

I'm running 315/30/19 Cup2's on an M4, wheels are Signature Forged 19 x 11.5 ET45. Front are 265/35/19 on 19 x 9.5 ET20

Thanks so much for your reply! That looks great, I don't suppose you have any other pictures you could post? Also do you think the rear 315/30/19 would work on an 11J ET44 as I'm look at some Apex wheels, a quick calculate seems to think it will fit very much in the same place in the arch but the tyre will be a touch more full on the rim.

[RevNev]

Originally Posted by F80M3MattUK

Thanks so much for your reply! That looks great, I don't suppose you have any other pictures you could post? Also do you think the rear 315/30/19 would work on an 11J ET44 as I'm look at some Apex wheels, a quick calculate seems to think it will fit very much in the same place in the arch but the tyre will be a touch more full on the rim.

Here's the 315/30's and 265/35's on my previous wheels that were Apex spec, 19x11 ET44 and 19x9 ET22. Having plenty of clearance, I went another 1/2" wider with the Signature Wheels with no scraping. I didn't like the 305/30 being slightly smaller diameter than the 265/35 front tyre and the 315/30 I think is the perfect fitment. I tried a 325/30 Porsche spec Cup2 on the 11.5's ET45, but they were too wide and most certainly would've scraped.

[TopJimmy]

Originally Posted by F80M3MattUK

Thanks so much for your reply! That looks great, I don't suppose you have any other pictures you could post? Also do you think the rear 315/30/19 would work on an 11J ET44 as I'm look at some Apex wheels, a quick calculate seems to think it will fit very much in the same place in the arch but the tyre will be a touch more full on the rim.

Check out willtheyfit dot com.

[F80M3MattUK]

Originally Posted by RevNev

Here's the 315/30's and 265/35's on my previous wheels that were Apex spec, 19x11 ET44 and 19x9 ET22. Having plenty of clearance, I went another 1/2" wider with the Signature Wheels with no scraping. I didn't like the 305/30 being slightly smaller diameter than the 265/35 front tyre and the 315/30 I think is the perfect fitment. I tried a 325/30 Porsche spec Cup2 on the 11.5's ET45, but they were too wide and most certainly would've scraped.

Thanks for the extra pictures and extra information, from what I've seen on overall tyre height comparisons the 315/30 matches the 265/35 better on a 19" wheel and will most likely be a better tyre to keep the traction control happy being a fraction taller rather than a faction smaller like a 305/30.

I'd most likely be aiming at something very similar ride height wise to yours as well, maybe I'd go a touch lower but not much so it's good to hear your experience.

I'd be going for MPS4S rather than Cup2 but imagine they will come up very similar in size to each other.

Originally Posted by TopJimmy

Check out willtheyfit dot com.

I have been doing! It's a brilliant tool isn't it to help but somehow there is nothing quite like knowing which you and Rev Nut have been very helpful with extra information on. On my E92 M3 I ran a 255/35/19 front with a 295/30/19 rear as they were the perfect match in height and and side wall to each other and IMO looked great and made the car look much more level with a better visual balance in the way the wheel and tyre looked in the arch.

[RevNev]

Originally Posted by F80M3MattUK

I'd most likely be aiming at something very similar ride height wise to yours as well, maybe I'd go a touch lower but not much so it's good to hear your experience.

I'd be going for MPS4S rather than Cup2 but imagine they will come up very similar in size to each other.

The ride height of mine (pictured) is Euro spec Eibach springs, I've since fitted the MP HAS and run it a bit lower in the rear.

The only 315/30/19 available in Australia was the Cup2 rear tyre from the GT350R Mustang but I've seen Michelin now does the 315/30 in PS4S I would think are much the same dimensions.

[F80M3MattUK]

Originally Posted by RevNev

The ride height of mine (pictured) is Euro spec Eibach springs, I've since fitted the MP HAS and run it a bit lower in the rear.

The only 315/30/19 available in Australia was the Cup2 rear tyre from the GT350R Mustang but I've seen Michelin now does the 315/30 in PS4S I would think are much the same dimensions.

That's even better to know as mine is on MP HAS as of 3 days ago, I've not gone any lower than standard on the rear with mine being a Competition I think the rear ride height was pretty well spot on but I have pulled the front down to match the back, no pictures yet as post heat wave in the UK it's returned to grey and raining so the cars looking disgustingly dirty currently!

[RevNev]

Originally Posted by F80M3MattUK

That's even better to know as mine is on MP HAS as of 3 days ago, I've not gone any lower than standard on the rear with mine being a Competition I think the rear ride height was pretty well spot on but I have pulled the front down to match the back

The Euro Eibach's only lowered the rear of mine (M4 Competition) 10mm and lowered the front about an inch. The stock rear ride is pretty good, it's the front that looked too high!

[F80M3MattUK]

Originally Posted by RevNev

The Euro Eibach's only lowered the rear of mine (M4 Competition) 10mm and lowered the front about an inch. The stock rear ride is pretty good, it's the front that looked too high!

The front was a full 30mm higher on my F80 than the back, I think I might like to take another 5-10mm out of the ride height but I've got a bit of a steep drive and want a CS splitter so didn't want to go to lower!

[RevNev]

Originally Posted by F80M3MattUK

The front was a full 30mm higher on my F80 than the back, I think I might like to take another 5-10mm out of the ride height but I've got a bit of a steep drive and want a CS splitter so didn't want to go to lower!

I've got a CS splitter and they're pretty low underneath. I had to glue some paving bricks on my side driveway entrance for the splitter to clear.

[F80M3MattUK]

Originally Posted by RevNev

I've got a CS splitter and they're pretty low underneath. I had to glue some paving bricks on my side driveway entrance for the splitter to clear.

I think yours looks a little easier than mine maybe as I have the road sloping down then the pavement going up before the drive goes down again, the worst point is coming over the pavement and onto the drive as it's ^ sort of angle and gets very close the the sill in the area under the front seats seems to be the closest.

Did you go for the genuine CS splitter? If so did you also get the brackets and was it easy enough to fit up?

[RevNev]

Originally Posted by F80M3MattUK

Did you go for the genuine CS splitter? If so did you also get the brackets and was it easy enough to fit up?

Yes, it's the genuine CS splitter with the brackets. It's a fairly straight forward fitment with bumper removal, here's a picture whilst fitting.

[F80M3MattUK]

Originally Posted by RevNev

Yes, it's the genuine CS splitter with the brackets. It's a fairly straight forward fitment with bumper removal, here's a picture whilst fitting.

That's great, thanks so much for that, did you fit it yourself or did you have a garage/bodyshop fit it?

[Smurfkiller]

Originally Posted by TopJimmy

Check out willtheyfit dot com.

That’s. Cool. Here is a page with specs for all the stock wheels.

https://bimmertips.com/oem-bmw-f82-m...l-style-specs/

[RevNev]

Originally Posted by F80M3MattUK

That's great, thanks so much for that, did you fit it yourself or did you have a garage/bodyshop fit it?

I did it myself, but 30+ years of motorsport engineering made the job less challenging than it may be for some. The brackets need rivet nuts to bolt them onto the front panel but other than that, the rest of the fitment aligns well and is pretty straight forward.

[F80M3MattUK]

Originally Posted by RevNev

I did it myself, but 30+ years of motorsport engineering made the job less challenging than it may be for some. The brackets need rivet nuts to bolt them onto the front panel but other than that, the rest of the fitment aligns well and is pretty straight forward.

I would have a go at it myself but I cant get the F80 in my garage at home and being in sunny England I don't trust the weather to stay nice long enough to wash a car let alone work on it outside! I showed a local body shop the picture you posted and the real OEM image and they have said they will do it.

[M4J0R T0M]

Originally Posted by TopJimmy

I'm on a very close setup for my drag set.
Apex 18x11ET44
Hoosier DR2 315/30/18
These fit fine on my F80 M3.
Pix are on my M4 Base.
M3 was sold, but had MP-HAS too!

How much was the rear lowered compared to stock? I’m strongly considering running this setup on mine and I’m lowered on EMD with the rear puck installed. Hoping I don’t have to switch back to factory springs in the rear.

[TopJimmy]

Originally Posted by M4J0R T0M

How much was the rear lowered compared to stock? I'm strongly considering running this setup on mine and I'm lowered on EMD with the rear puck installed. Hoping I don't have to switch back to factory springs in the rear.

I was on base OEM EDC suspension on my F82, non-ZCP.

[M4J0R T0M]

Originally Posted by TopJimmy

I was on base OEM EDC suspension on my F82, non-ZCP.

I'm talking about on your f80 with the has kit installed.