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      02-19-2019, 01:22 PM   #1
M3SemiSlow
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Meaty tire setup on 20” possible ?

Meaty tire setup on 20”, specs 20x9.5 et22 & 20x11 et40 possible?

Has anyone run 275/30/20 on a 9.5 & 305/30/20 on a 11.
Have pic’s of how it looks?

I know 265/30 & 295/30 is the preferred sizing on a 9.5 & 11. but I would like a tad bit more meat if possible.
295 looks good on a 10.5 but a little stretched on a 11.

Would running a 275/30 & 305/30 Mercedes spec ps4 help? Since the tire runs a bit more narrow than a reg ps4.
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      02-19-2019, 05:50 PM   #2
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275/30/20 on a ET22 will work.

305/30/20 on an ET40 will likely rub, you need ET44 to clear a 305. A 10mm spacer would fix that.

This assumes stock suspension height..
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      02-19-2019, 07:11 PM   #3
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Looking into MPhas springs.

Et44 does seem to be the sweet spot. Was hoping there might be a chance wit et40

Not sure about the 10mm spacer. That would push the rim/lip further out, making the et40 to et30.
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      02-19-2019, 07:40 PM   #4
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305/30 on 20x11 et40 shouldn't rub at all. I now have 19x12 et45 with 325/30/19 lowered, no rub at all! Before I had 20x11.5 er47 325/25/20 before lowered and no rub either.
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      02-20-2019, 05:44 AM   #5
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Quote:
Originally Posted by guess2098 View Post
305/30 on 20x11 et40 shouldn't rub at all. I now have 19x12 et45 with 325/30/19 lowered, no rub at all! Before I had 20x11.5 er47 325/25/20 before lowered and no rub either.
305/30/20 will rub without question on a 20x11 et40. I've tried so myself with MPSS. If you have a thinner tire, perhaps from Toyo, you may be able to get away with it if your camber is around -2.3 or so but I rubbed with a camber of -2.2 on a Michelin PSS N0 sadly.
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      02-20-2019, 08:33 AM   #6
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Quote:
Originally Posted by LeFort One View Post
305/30/20 will rub without question on a 20x11 et40. I've tried so myself with MPSS. If you have a thinner tire, perhaps from Toyo, you may be able to get away with it if your camber is around -2.3 or so but I rubbed with a camber of -2.2 on a Michelin PSS N0 sadly.

Running a 305/30 PSS on a 20x12 without rubbing
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      02-20-2019, 11:25 AM   #7
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Quote:
Originally Posted by M3SemiSlow View Post
Looking into MPhas springs.

Et44 does seem to be the sweet spot. Was hoping there might be a chance wit et40

Not sure about the 10mm spacer. That would push the rim/lip further out, making the et40 to et30.
You're totally right. My brain wasn't working LOL

Do anti-spacers exist? I think that would work.
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      02-20-2019, 01:42 PM   #8
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After some more research.
The most popular sizing for 20x9.5 et23 & 20x11 et40.
is 265/30/20 & 295/30/20

Doesnt seem like i can go up in size, except for the front too a
275-30-20 and keep the rear at 295-30-20

Fitting a 305/30 rear et40 seems possible, but a case by case bases. Depending on a combo of things: height, offset, -camber and tire brand.

The best compromise for semi-meaty setup for me would be to run
275-30-20 & 295-30-20
The sidewall slant/stretch should be somewhat even front and back.

I get that little extra pothole protection in the front, over a 265/30.
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      02-20-2019, 03:12 PM   #9
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275 on 9.5 is going to be a bit less stretched than 295 on 11. This is benchmarking on the 275x9 and 295x10 that a lot of zcp owners run.

This is probably a good thing because if you're most concerned about potholes, the front wheels will take a harder hit than the rears.

Either way I don't think you'll be disappointed in the performance of the 295 MP4S'. They hook WAY better than 285 PSS's
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      02-20-2019, 03:22 PM   #10
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      02-20-2019, 05:03 PM   #11
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Quote:
Originally Posted by LeFort One View Post
Quote:
Originally Posted by guess2098 View Post
305/30 on 20x11 et40 shouldn't rub at all. I now have 19x12 et45 with 325/30/19 lowered, no rub at all! Before I had 20x11.5 er47 325/25/20 before lowered and no rub either.
305/30/20 will rub without question on a 20x11 et40. I've tried so myself with MPSS. If you have a thinner tire, perhaps from Toyo, you may be able to get away with it if your camber is around -2.3 or so but I rubbed with a camber of -2.2 on a Michelin PSS N0 sadly.
That is weird because on 20x11.5 et47 with mpss 325/25/20 no rub at all. I lowered with kw cs 3way and -2.8. When the tire went in all the way (floor jet other side), it still have about 3~4mm between tire and fender.

325 on 11.5 is fat fat on the side well compared to 305 on 11.

I don't have 20 anymore but today I have 325/30/19 on 12 et45, it doesn't have rub problem either
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      02-20-2019, 05:05 PM   #12
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Quote:
Originally Posted by M3SemiSlow View Post
After some more research.
The most popular sizing for 20x9.5 et23 & 20x11 et40.
is 265/30/20 & 295/30/20

Doesnt seem like i can go up in size, except for the front too a
275-30-20 and keep the rear at 295-30-20

Fitting a 305/30 rear et40 seems possible, but a case by case bases. Depending on a combo of things: height, offset, -camber and tire brand.

The best compromise for semi-meaty setup for me would be to run
275-30-20 & 295-30-20
The sidewall slant/stretch should be somewhat even front and back.

I get that little extra pothole protection in the front, over a 265/30.
275 and 295 would be better as the wheel dimensions are not too off when you look at it from the side
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      02-24-2019, 10:03 AM   #13
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Quote:
Originally Posted by guess2098 View Post
That is weird because on 20x11.5 et47 with mpss 325/25/20 no rub at all. I lowered with kw cs 3way and -2.8. When the tire went in all the way (floor jet other side), it still have about 3~4mm between tire and fender.

325 on 11.5 is fat fat on the side well compared to 305 on 11.

I don't have 20 anymore but today I have 325/30/19 on 12 et45, it doesn't have rub problem either
what's weird? 20x11 et 40 and 20x11.5 et 47 are similar in fitment but the et 47 draws wheel/tire inward towards shock.. not only that but the 11.5 help with wider tires , so it fits the 325/30/19 better, and 295/30/20 is TALLER than 325/30/19.. On top of that you are running a full degree more camber in the rear. Makes sense to me, great fitment I'd prefer less camber in rear if possible.

Same reason why a 305/25/20 fits on 20x11 et 40 with -2.8 camber.. thinner profile / shorter tire / camber

Last edited by JamesGames; 02-24-2019 at 10:14 AM..
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      02-24-2019, 11:49 AM   #14
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Stock Camber 305/30 on 20x12


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      02-26-2019, 09:18 PM   #15
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      03-06-2019, 08:16 AM   #16
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Hey everyone.. Was reading through the thread and don't think I saw anything about a 265/35/20 working on a 9 in rim +20ET. Does anyone know if I'd run into issues? I haven't lowered my M4 or anything yet as I was waiting to get my wheels.
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      03-06-2019, 08:48 AM   #17
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Quote:
Originally Posted by e2d View Post
Hey everyone.. Was reading through the thread and don't think I saw anything about a 265/35/20 working on a 9 in rim +20ET. Does anyone know if I'd run into issues? I haven't lowered my M4 or anything yet as I was waiting to get my wheels.
That's a very tall tire for the front.
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      03-06-2019, 09:09 AM   #18
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Quote:
Originally Posted by LOW4LYF View Post
That's a very tall tire for the front.
Sheesh.. I was worried about that. Will I have any rubbing issues at stock height or when I install my coil overs? I was on the site where I bought my rims and was trying to following the tire recommendations. They had 255/35/20 though and I wanted something a bit wider so i went 265/35/20. Smh..

Last edited by e2d; 03-06-2019 at 09:36 AM..
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      03-06-2019, 10:39 AM   #19
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For a meaty look, you can do 20x9.5 ET18 front and 20x11 ET42 rear, perfectly flushed (assuming you're lowered / natural camber). 275/30/20 front and 305/30/20 rear will be perfect, no rub. Below is 20x9.5 ET18 front with MP4S 275/30/20 to give you an idea. Rear is 295/30/20 on 20x11 ET38.
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      03-06-2019, 12:50 PM   #20
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Quote:
Originally Posted by e2d View Post
Hey everyone.. Was reading through the thread and don't think I saw anything about a 265/35/20 working on a 9 in rim +20ET. Does anyone know if I'd run into issues? I haven't lowered my M4 or anything yet as I was waiting to get my wheels.
Quote:
Originally Posted by LOW4LYF View Post
That's a very tall tire for the front.
I agree with LOW4LYF. It's a tall front tire.

265/35/20 is 27.3 in diameter and taller than the stock 26.3 diameter 265/30/20.
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      03-06-2019, 01:20 PM   #21
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At least I didn't have the tires mounted yet otherwise I'd be out some $$. Still got time to exchange them. Back to the drawing board. Thanks everyone for the feedback
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      03-06-2019, 01:22 PM   #22
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Quote:
Originally Posted by Signature Wheel BMW View Post
For a meaty look, you can do 20x9.5 ET18 front and 20x11 ET42 rear, perfectly flushed (assuming you're lowered / natural camber). 275/30/20 front and 305/30/20 rear will be perfect, no rub. Below is 20x9.5 ET18 front with MP4S 275/30/20 to give you an idea. Rear is 295/30/20 on 20x11 ET38.
Thanks for the info, do you have a side shot of the car.
I’m going to run 275/30/20 like your pic.

FYI, for anyone looking to run 20x9.5 et:23 & 275/30/20 on MPhas like me.
There might be a inner tire clearance issue with the front perch.
A 3mm or 5mm spacer might be needed to clear.

I’ll update when I get MPhas.

Last edited by M3SemiSlow; 03-06-2019 at 10:02 PM..
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