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[shimmy23]

Looking like my new wheel setup is:
20x9.5 et19
20x11 et25

I'm currently lowered on swift springs w/OEM EDC

Was wanting to run 265/30/20 and 295/30/20 MPSS. Does anyone see any issues with running this setup and tire combo? I realize that this will be slightly larger than the OEM ZCP spec setup and I'm ok with that. I just want to make sure these will fit.

Tire sizes are limited in 20s and I don't want to run a 2025 profile tire.

[tomfraser]

Will be seriously tall and there is a good chance of rubbing I would suspect, and be well over OEM tyre height - I am running 255/30/20 and 275/30/20 on 9" front and 10.5" rear.

My call would be 255/30 front and 295/25 rear - or even a 305 rear - 30 profile on rear with that width will just be too tall.

Either way you are going to be way outside the OEM 20mm front to rear stagger as well.

[shimmy23]

Originally Posted by tomfraser

Will be seriously tall and will pretty much definitely rub, and be well over OEM tyre height - I am running 255/30/20 and 275/30/20.

My call would be 255/30 front and 295/25 rear - 30 profile on rear with that width will just be too tall.

when i run the calcs they're only showing .5" taller than OEM sizes. My concern with running a narrower tire is stretch too. don't want stretch.

[roastbeef]

Originally Posted by shimmy23

Was wanting to run 265/30/20

you'll rub. i'm on oem zcp suspension and oem zcp wheels with 275/30/19's. i might rub a tiny tiny bit at full lock up front on the inside rear part of the wheel well. your 265/30/20 is 0.7" taller.
i have also ran 275/35/19's up front (because i got them at a good price) and they definitely rubbed. the 275/35/19's are the same diameter as the 265/30/20's, so i'd say you'll definitely rub at full lock.

what wheels? a bbs 3piece? you could always build them for 20's and downsize to 19's later. i think it is difficult to get 20's to look/fit right on these cars.

[becausephilchow]

I personally find 20s to be a bit too big on an E90. Looks great/fine on an E92 though, larger arches in the rear.

255/30/20 max up front. Anything else is just way too tall and you'll rub, and the car will look a little weird IMO.

I believe you can run a 305/25/20 in the rear if you want, should be ok.

[shimmy23]

Originally Posted by roastbeef

you'll rub. i'm on oem zcp suspension and oem zcp wheels with 275/30/19's. i might rub a tiny tiny bit at full lock up front on the inside rear part of the wheel well. your 265/30/20 is 0.7" taller.
i have also ran 275/35/19's up front (because i got them at a good price) and they definitely rubbed. the 275/35/19's are the same diameter as the 265/30/20's, so i'd say you'll definitely rub at full lock.

what wheels? a bbs 3piece? you could always build them for 20's and downsize to 19's later. i think it is difficult to get 20's to look/fit right on these cars.

What do you mean .7" taller? A 265/30/20 is actually smaller in diameter than your 275/35/19 by .3" and only .5" taller than OEM 18" sizes. A 255/30/20 would be a safe route, but not sure if I'll like that stretch on a 9.5" wheel.

Originally Posted by becausephilchow

I personally find 20s to be a bit too big on an E90. Looks great/fine on an E92 though, larger arches in the rear.

255/30/20 max up front. Anything else is just way too tall and you'll rub, and the car will look a little weird IMO.

I believe you can run a 305/25/20 in the rear if you want, should be ok.

Thanks for the input. I've been trying to find pics of all these tires on my spec'd wheels. Hard to see how they'll actually sit since brands differ a little on width.

[becausephilchow]

Originally Posted by shimmy23

What do you mean .7" taller? A 265/30/20 is actually smaller in diameter than your 275/35/19 by .3" and only .5" taller than OEM 18" sizes. A 255/30/20 would be a safe route, but not sure if I'll like that stretch on a 9.5" wheel.



Thanks for the input. I've been trying to find pics of all these tires on my spec'd wheels. Hard to see how they'll actually sit since brands differ a little on width.

MPSS run wide, so, whatever brand you find, likely runs skinnier thna the MPSS.

[roastbeef]

Originally Posted by shimmy23

What do you mean .7" taller? A 265/30/20 is actually smaller in diameter than your 275/35/19 by .3" and only .5" taller than OEM 18" sizes. A 255/30/20 would be a safe route, but not sure if I'll like that stretch on a 9.5" wheel.

what i did was plug my front tire size into tire rack's size search, and added a different tires size for the "rears" in the 265/30/20 size, just to compare the two. looking at pss', then clicking on specs, you can compare the specs of the two.
i'm referencing my front tire size right now (275/30) that might rub a tiny bit.

275/30/19 diameter = 25.6
265/30/20 diameter = 26.3

unless its completely over my head, thats a 0.7" difference. the 0.3" difference is with the 275/35/19's and the 265/30/20's, in which the 265/30/20's are slightly smaller, but i think they will still rub. whats on my fender liner is more than 0.3" of rubbing. i'm no expert, just trying to help from my little experience.

[shimmy23]

Originally Posted by roastbeef

what i did was plug my front tire size into tire rack's size search, and added a different tires size for the "rears" in the 265/30/20 size, just to compare the two. looking at pss', then clicking on specs, you can compare the specs of the two.
i'm referencing my front tire size right now (275/30) that might rub a tiny bit.

275/30/19 diameter = 25.6
265/30/20 diameter = 26.3

unless its completely over my head, thats a 0.7" difference. the 0.3" difference is with the 275/35/19's and the 265/30/20's, in which the 265/30/20's are slightly smaller, but i think they will still rub. whats on my fender liner is more than 0.3" of rubbing. i'm no expert, just trying to help from my little experience.

got it. i see what you're saying now.

[Maxf80M3]

Originally Posted by tomfraser

Will be seriously tall and there is a good chance of rubbing I would suspect, and be well over OEM tyre height - I am running 255/30/20 and 275/30/20 on 9" front and 10.5" rear.

My call would be 255/30 front and 295/25 rear - or even a 305 rear - 30 profile on rear with that width will just be too tall.

Either way you are going to be way outside the OEM 20mm front to rear stagger as well.

Agreed , I'm running the 255/30/20 with et20 and it's slightly rubs at total diameter 26.02 the 265 will be bigger and the original stock diameter was 25 1/2 . I could have put some higher profile on the rears as I have height space. I'm liking the 305 on a 10.5. It sits perfectly flush on the rim ... no stretched out look . Not my thing

[slicer]

You are kindof screwed. You have no choice but to run stretched tires in the front and rubber bands all around. That's why you don't want 20's on an e92... Your proposed tire sizes won't work without rubbing. You will need 255/30/20 front and 285/30/20, 295/25/20 or 305/25/20 in the rear. You will be adding a bunch of stagger and most likely under steer at the limit with the drastically wider rear tire. You probably don't care about that if you are running 20's.

[Maxf80M3]

I have no stretch happening

[Maxf80M3]

Close up

[slicer]

Originally Posted by Maxe93

I have no stretch happening

I bet that's because you are running 9" wheels in the front with 255's. OP has 9.5" wide wheels which will stretch a 255/30 tire.

I realize looks are subjective but the e9x both looks and performs significantly better with 19's or 18's. I just think 20's with rubber band tires look silly on this platform. I'm basing this on actual experience as I had 20's on my first M3.

[Maxf80M3]

Originally Posted by slicer

I bet that's because you are running 9" wheels in the front with 255's. OP has 9.5" wide wheels which will stretch a 255/30 tire.

I realize looks are subjective but the e9x both looks and performs significantly better with 19's or 18's. I just think 20's with rubber band tires look silly on this platform. I'm basing this on actual experience as I had 20's on my first M3.

To be honest I ran the factory 19's and aftermarket 19's and the car was amazing. I do prefer the look of the 20's but after driving it all day yesterday I see what others are saying. It's slightly bumpy and the steering feel changed. In hindsight I would recommend sticking with 19's for general purpose and 18's for track. Oh well !!! These rims were factory warr replacement because 19's were not available . I'll give them a season and possibly switch back. Luckily I kept my stock wheels and 19" rubber . My next move will be a volk setup...

[slicer]

Originally Posted by Maxe93

To be honest I ran the factory 19's and aftermarket 19's and the car was amazing. I do prefer the look of the 20's but after driving it all day yesterday I see what others are saying. It's slightly bumpy and the steering feel changed. In hindsight I would recommend sticking with 19's for general purpose and 18's for track. Oh well !!! These rims were factory warr replacement because 19's were not available . I'll give them a season and possibly switch back. Luckily I kept my stock wheels and 19" rubber . My next move will be a volk setup...

Thanks for the honest feedback. I wasn't trying to offend with my comments about 20's.