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      04-16-2019, 08:14 PM   #1
OldDirtyCoaks
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265/285 - Can it be done?

Searched around the forum but couldn't find a clear answer on this.

I have an M2C that will be tracked 5-8 times a year that I am looking to lower probably 15-20 MM with either KW V3s or BMW coilovers and camber plates. Partly for the potential for improved performance but if I'am honest with myself, mostly because I like the look .

I know on a stock car t 265/35s MAY rub the fender liner under hard compression, I want to know if anyone has experience running 265s on the front of a lowered car without going beyond -2 camber up front?

I hate the stretched tire look and my dream is to run 265/35 up front with 285s or 295s in the back on cup sports whilst maintaining a 35 aspect ratio, can it be done?
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      04-16-2019, 08:34 PM   #2
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You’ll rub, but it’s just a cpl mm. It goes away after you wear a cpl mm off the tire or fender liner.

More importantly, a 265 vs 255 on the stock 9” front wheel won’t gain you a quicker time on track and makes turn in slow and lazy.

And, 295/35 in the back is a no go if you’re lowered. 285/35 only works with a max of about a 17-20mm drop.

255/285 is the way to go for 35 series tires on a lowered M2 and the stock wheels.
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      04-17-2019, 12:50 AM   #3
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Quote:
Originally Posted by OldDirtyCoaks View Post
Searched around the forum but couldn't find a clear answer on this.

I have an M2C that will be tracked 5-8 times a year that I am looking to lower probably 15-20 MM with either KW V3s or BMW coilovers and camber plates. Partly for the potential for improved performance but if I'am honest with myself, mostly because I like the look .

I know on a stock car t 265/35s MAY rub the fender liner under hard compression, I want to know if anyone has experience running 265s on the front of a lowered car without going beyond -2 camber up front?

I hate the stretched tire look and my dream is to run 265/35 up front with 285s or 295s in the back on cup sports whilst maintaining a 35 aspect ratio, can it be done?
Cant see any reason to stay with /35 when going with 266/285. is there a reason you want to increase the diameter of your wheel?

/30 fits perfectly. At least with mps4s
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      04-17-2019, 07:23 PM   #4
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Originally Posted by Lukeni View Post
Cant see any reason to stay with /35 when going with 266/285. is there a reason you want to increase the diameter of your wheel?

/30 fits perfectly. At least with mps4s
Most of my driving is city so I wanted the extra cushion from the sidewall.

I think I'll go with the 255/285 as ZM2 suggested, creeped his prior posts and it seems like he knows his sh*t.
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      04-17-2019, 07:25 PM   #5
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Quote:
Originally Posted by OldDirtyCoaks View Post
Most of my driving is city so I wanted the extra cushion from the sidewall.

I think I'll go with the 255/285 as ZM2 suggested, creeped his prior posts and it seems like he knows his sh*t.
Just learning thru trial and error...

Also, I do use 30 series tires for the track, but 35 for the street. Here’s my pros/cons list bn 255/285/35 vs 265/295/30 or 305/30 for the street:

255/285/35 - Quieter, more comfortable, better wet grip, better acceleration (longer contact patch), better looks (less fender gap), better curb protection, more flickable at lower speeds.

265/295/30 or 305/30 - Better lateral grip (wider contact patch)

What do you guys think?

Last edited by ZM2; 04-17-2019 at 08:53 PM.
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      04-17-2019, 08:21 PM   #6
OldDirtyCoaks
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Quote:
Originally Posted by ZM2 View Post
Just learning thru trial and error...

Also, I do use 30 series tires for the track, but 35 for the street. Here’s my pros/cons list bn 255/285/35 vs 265/295 or 305 for the street:

255/285/35 - Quieter, more comfortable, better wet grip, better acceleration (longer contact patch), better looks (less fender gap), better curb protection

265/295 or 305/30 - Better lateral grip (wider contact patch)

What do you guys think?
The grip may be compelling but I am stock and a relatively shit driver so the pros of the narrower tires way overweight the alternative. Also, I wont be running dedicated track tires/wheels and I live in the city where it rains nearly every day from mid October to the end of March so even though I'll be swapping out of the cups into winter rubber I have to be mindful of more pedestrian considerations then just laptimes.

Also where I live and spend most of my time is intensely urban so I often have to park by a curb or come across shitty roads that regularly scrape my rims. That's why I wanted the 265s the extra rubber and less of the stretch will help protect my rims.

I came up in the late 90s early 00s so I absolutely hate the stretched look and less wheel gap is always favorable.

I have to check out the next M4 I see to see what the stretch on the front looks like, I don't think there is any.
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      04-17-2019, 08:52 PM   #7
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Quote:
Originally Posted by OldDirtyCoaks View Post
The grip may be compelling but I am stock and a relatively shit driver so the pros of the narrower tires way overweight the alternative. Also, I wont be running dedicated track tires/wheels and I live in the city where it rains nearly every day from mid October to the end of March so even though I'll be swapping out of the cups into winter rubber I have to be mindful of more pedestrian considerations then just laptimes.

Also where I live and spend most of my time is intensely urban so I often have to park by a curb or come across shitty roads that regularly scrape my rims. That's why I wanted the 265s the extra rubber and less of the stretch will help protect my rims.

I came up in the late 90s early 00s so I absolutely hate the stretched look and less wheel gap is always favorable.

I have to check out the next M4 I see to see what the stretch on the front looks like, I don't think there is any.
Based on what you’re saying, you’re probably fine with 265 up front. You might get some rub over speed bumps, but it would only be for an instant.

The turn in feel won’t be as good as a 255 on a 9” wheel, but you’ll get less stretch and the more curb protection you’re looking for in the city.

I just ordered a new PS4S set bc my rears are toast, but my front 265s have 1/3 life left. I’ll swing you a deal if you want to try them, but shipping to BC may not be pretty.
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      Yesterday, 11:11 AM   #8
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Quote:
Originally Posted by ZM2 View Post
Based on what you’re saying, you’re probably fine with 265 up front. You might get some rub over speed bumps, but it would only be for an instant.

The turn in feel won’t be as good as a 255 on a 9” wheel, but you’ll get less stretch and the more curb protection you’re looking for in the city.

I just ordered a new PS4S set bc my rears are toast, but my front 265s have 1/3 life left. I’ll swing you a deal if you want to try them, but shipping to BC may not be pretty.
I have a set of 18" Apex 9.5" ET 28 square set up with 255/35 tires for track days. I would like to get back to a staggered set by getting 2- 10.5", or 2- 11" Apex wheels so I can run 275 or 285 wide in the rear. Which would be better for the track in your experience. I would use my 18" 255 wide for the front. Also, would it be OK to run 30's in the back, and 35's in the front?
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      Yesterday, 11:31 AM   #9
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Quote:
Originally Posted by chief1richard View Post
I have a set of 18" Apex 9.5" ET 28 square set up with 255/35 tires for track days. I would like to get back to a staggered set by getting 2- 10.5", or 2- 11" Apex wheels so I can run 275 or 285 wide in the rear. Which would be better for the track in your experience. I would use my 18" 255 wide for the front. Also, would it be OK to run 30's in the back, and 35's in the front?
For the front, you should be able to fit 265s on those 9.5” Apex’s with no prob.

For the rear, I’d go as wide as you can fit so you can put maximum power down out of the corner. That means 285-305 depending on wheel offset and suspension setup.

F/R series differences doesn’t really matter. The general rule is you want a tire in the rear that has a slightly larger diameter and sidewall measurement. That way, the DSC doesn’t get upset. If you run with DSC off you can run whatever sizes you want, but I’d still try to stick to that rule so handling balance doesn’t get too out of whack.

As an example, when I run R7s or 71Rs, I get a 265/35/19 for the front and 295 or 305/30 for the rear. The 305/30 has almost the same heights as the 265/35, but the 295/30 is a little too short. It works fine tho, bc I run with DSC off.
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      Yesterday, 11:50 AM   #10
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Quote:
Originally Posted by ZM2 View Post
For the front, you should be able to fit 265s on those 9.5” Apex’s with no prob.

For the rear, I’d go as wide as you can fit so you can put maximum power down out of the corner. That means 285-305 depending on wheel offset and suspension setup.

F/R series differences doesn’t really matter. The general rule is you want a tire in the rear that has a slightly larger diameter and sidewall measurement. That way, the DSC doesn’t get upset. If you run with DSC off you can run whatever sizes you want, but I’d still try to stick to that rule so handling balance doesn’t get too out of whack.

As an example, when I run R7s or 71Rs, I get a 265/35/19 for the front and 295 or 305/30 for the rear. The 305/30 has almost the same heights as the 265/35, but the 295/30 is a little too short. It works fine tho, bc I run with DSC off.
Will tires (PS4S) rub with a 9.5" 255/35 19" & 10.5" 275/35 19" rim on stock suspension?
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      Yesterday, 12:07 PM   #11
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Originally Posted by Inuyasha View Post
Will tires (PS4S) rub with a 9.5" 255/35 19" & 10.5" 275/35 19" rim on stock suspension?
Depends on your wheel offsets. If they’re more extreme than the BBS FI-Rs that some guys run, it’ll rub.
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      Yesterday, 12:07 PM   #12
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Quote:
Originally Posted by ZM2 View Post
For the front, you should be able to fit 265s on those 9.5” Apex’s with no prob.

For the rear, I’d go as wide as you can fit so you can put maximum power down out of the corner. That means 285-305 depending on wheel offset and suspension setup.

F/R series differences doesn’t really matter. The general rule is you want a tire in the rear that has a slightly larger diameter and sidewall measurement. That way, the DSC doesn’t get upset. If you run with DSC off you can run whatever sizes you want, but I’d still try to stick to that rule so handling balance doesn’t get too out of whack.

As an example, when I run R7s or 71Rs, I get a 265/35/19 for the front and 295 or 305/30 for the rear. The 305/30 has almost the same heights as the 265/35, but the 295/30 is a little too short. It works fine tho, bc I run with DSC off.
I have all stock suspension so I stick with the 255's front. I' probably go 285 rear. Would a 10.5", or 11" wheel be best for 285?
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      Yesterday, 12:11 PM   #13
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Quote:
Originally Posted by chief1richard View Post
I have all stock suspension so I stick with the 255's front. I' probably go 285 rear. Would a 10.5", or 11" wheel be best for 285?
Plenty of guys with stock suspension run a 265 on that Apex front wheel with no prob. Something you can try after you burn up the 255s.

285s work fine on a 10” wheel, so I’d go 10.5”. What offset are you looking at?

11” in the back is doable but makes fitment more complicated than necessary. I wouldn’t do more than 10.5” in the rear on the M2.
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      Yesterday, 12:21 PM   #14
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Quote:
Originally Posted by ZM2 View Post
Depends on your wheel offsets. If they’re more extreme than the BBS FI-Rs that some guys run, it’ll rub.
Thanks, probably not more extreme than FI-R' 22/35 offset, so this offset would be on the brink of rubbing I suppose.
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      Yesterday, 12:25 PM   #15
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Quote:
Originally Posted by Inuyasha View Post
Thanks, probably not more extreme than FI-R' 22/35 offset, so this offset would be on the brink of rubbing I suppose.
It depends on suspension and alignment settings, but yeah, that’s as far as I would go on offsets.
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      Yesterday, 01:12 PM   #16
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Quote:
Originally Posted by ZM2 View Post
Plenty of guys with stock suspension run a 265 on that Apex front wheel with no prob. Something you can try after you burn up the 255s.

285s work fine on a 10” wheel, so I’d go 10.5”. What offset are you looking at?

11” in the back is doable but makes fitment more complicated than necessary. I wouldn’t do more than 10.5” in the rear on the M2.
Thanks, I was looking at 10.5 et40. I'll stick with 10.5". Appreciate all your knowledge, and experience.
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      Yesterday, 01:22 PM   #17
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Originally Posted by chief1richard View Post
Thanks, I was looking at 10.5 et40. I'll stick with 10.5". Appreciate all your knowledge, and experience.
That should work fine with a 285 on 18s. For 295/305, it may/may not work if you lower the car.

295/305/30/19s and a lowered M2 requires +40-45 offset, depending on alignment settings, but those tires are taller than 18s.
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