BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      10-17-2019, 03:32 PM   #1
ShocknAwe
1Addict
ShocknAwe's Avatar
3202
Rep
7,860
Posts

Drives: E82 Mutt, M57 Truck
Join Date: Jul 2012
Location: Charleston

iTrader: (22)

Opinion - Tire Sizing: 1M front conversion

Ok. Basic stuff here. I'm squaring up my fender widths with OE wide panels up front. Not doing the rear until I decide I need it, and I'm not totally convinced it would really net me that much more (usability) tire than I currently have on the rear axle.

These are the wheels:
Apex EC-7
18x9.5 et22 front and et58 rear.

I have the 18x9.5et58 rear wheels on already with 275/35/18 tires mounted, spaced 3mm to minimize rubbing the fuel filler neck. I may space it out 5mm or even 10mm.

Apex has advised a 255, 265, or 275/35 front tire.

The handling appeal of 275 square is strong, but the reality is I don't track or autox much at all anymore, went twice last year. Once this year. Next year I probably won't get there at all. Canyon carving is another deal altogether and I go once a month. But I really don't push 10/10 or even 8/10 on public roads.

In that case, 275/35 square would mostly be for rotating tires. Otherwise I'm inclined to fit 255/35 up front.


Open to thoughts!
__________________
2010 135i 6MT Jet Black
N54/3 FE82 Mutt | BUILD THREAD | GARAGE SALE
Appreciate 0
      10-18-2019, 11:21 AM   #2
dtla1
Colonel
dtla1's Avatar
826
Rep
2,232
Posts

Drives: 2011 135i, Space Grey
Join Date: Apr 2014
Location: Silicon Valley

iTrader: (2)

I run 255 square on style 261s. I feel like for canyon driving, especially tighter canyon driving, the amount of effort to get the 255 to turn in is pretty high. You can get quite the workout if you're actually trying to keep some sort of pace. I can only imagine wider tires will require more effort.

Just something to think about.
Appreciate 1
ShocknAwe3201.50
      10-18-2019, 11:28 AM   #3
ShocknAwe
1Addict
ShocknAwe's Avatar
3202
Rep
7,860
Posts

Drives: E82 Mutt, M57 Truck
Join Date: Jul 2012
Location: Charleston

iTrader: (22)

Quote:
Originally Posted by dtla1 View Post
I run 255 square on style 261s. I feel like for canyon driving, especially tighter canyon driving, the amount of effort to get the 255 to turn in is pretty high. You can get quite the workout if you're actually trying to keep some sort of pace. I can only imagine wider tires will require more effort.

Just something to think about.
Do you have servo?

Thanks for the input. I'll put it on my diet/workout plan.
__________________
2010 135i 6MT Jet Black
N54/3 FE82 Mutt | BUILD THREAD | GARAGE SALE
Appreciate 0
      10-18-2019, 11:35 AM   #4
dtla1
Colonel
dtla1's Avatar
826
Rep
2,232
Posts

Drives: 2011 135i, Space Grey
Join Date: Apr 2014
Location: Silicon Valley

iTrader: (2)

Quote:
Originally Posted by ShocknAwe View Post
Do you have servo?

Thanks for the input. I'll put it on my diet/workout plan.
Good question, I do not.
Appreciate 0
      10-18-2019, 11:38 AM   #5
ShocknAwe
1Addict
ShocknAwe's Avatar
3202
Rep
7,860
Posts

Drives: E82 Mutt, M57 Truck
Join Date: Jul 2012
Location: Charleston

iTrader: (22)

Quote:
Originally Posted by dtla1 View Post
Good question, I do not.
M3 rack?
__________________
2010 135i 6MT Jet Black
N54/3 FE82 Mutt | BUILD THREAD | GARAGE SALE
Appreciate 0
      10-18-2019, 11:44 AM   #6
dtla1
Colonel
dtla1's Avatar
826
Rep
2,232
Posts

Drives: 2011 135i, Space Grey
Join Date: Apr 2014
Location: Silicon Valley

iTrader: (2)

Quote:
Originally Posted by ShocknAwe View Post
M3 rack?
Nope, stock steering rack. I have TC Kline Coilovers with their Camber Plates and M3 front control arms.

I don't remember my alignment settings at the moment, but I think I was pretty close to 1/8" total toe up front, something like 2.3* of Camber. I still need to play with pressures since I think that'll help the most at this point. PS4S tires, in case you care.
Appreciate 0
      10-18-2019, 11:53 AM   #7
ShocknAwe
1Addict
ShocknAwe's Avatar
3202
Rep
7,860
Posts

Drives: E82 Mutt, M57 Truck
Join Date: Jul 2012
Location: Charleston

iTrader: (22)

Quote:
Originally Posted by dtla1 View Post
Nope, stock steering rack. I have TC Kline Coilovers with their Camber Plates and M3 front control arms.

I don't remember my alignment settings at the moment, but I think I was pretty close to 1/8" total toe up front, something like 2.3* of Camber. I still need to play with pressures since I think that'll help the most at this point. PS4S tires, in case you care.
Very similar setup then. And yes it'll be Ps4s for me. Liking them as an improvement over MPSS substantially.

What is your front wheel?
__________________
2010 135i 6MT Jet Black
N54/3 FE82 Mutt | BUILD THREAD | GARAGE SALE
Appreciate 0
      10-18-2019, 12:10 PM   #8
dtla1
Colonel
dtla1's Avatar
826
Rep
2,232
Posts

Drives: 2011 135i, Space Grey
Join Date: Apr 2014
Location: Silicon Valley

iTrader: (2)

Quote:
Originally Posted by ShocknAwe View Post
Very similar setup then. And yes it'll be Ps4s for me. Liking them as an improvement over MPSS substantially.

What is your front wheel?
I'm using a rear style 261 in the front. I also have a set of Arc-8s, I'm debating whether I should put PS4S on those or use something more aggressive (RE-71R), but might have to wait till next summer to make that choice.
Appreciate 0
      10-18-2019, 12:26 PM   #9
ShocknAwe
1Addict
ShocknAwe's Avatar
3202
Rep
7,860
Posts

Drives: E82 Mutt, M57 Truck
Join Date: Jul 2012
Location: Charleston

iTrader: (22)

Quote:
Originally Posted by dtla1 View Post
I'm using a rear style 261 in the front. I also have a set of Arc-8s, I'm debating whether I should put PS4S on those or use something more aggressive (RE-71R), but might have to wait till next summer to make that choice.
Ahh yeah you mentioned that.

I'm debating getting a set of RE71R as well. Gonna have to see if the PS4S can hold the hp/tq of my new setup first. No sense in wasting rubber.
__________________
2010 135i 6MT Jet Black
N54/3 FE82 Mutt | BUILD THREAD | GARAGE SALE
Appreciate 0
      10-21-2019, 10:39 AM   #10
amg6975
Captain
amg6975's Avatar
487
Rep
635
Posts

Drives: '12 M1.5, '05 ZHP, '98 M3/4/5
Join Date: May 2017
Location: Rochester NY

iTrader: (0)

If you're not doing any sort of competition just pull your fenders and run a 245 or 255 square set up. No need to do the whole conversion for 20mm.
Appreciate 0
      10-21-2019, 12:21 PM   #11
ShocknAwe
1Addict
ShocknAwe's Avatar
3202
Rep
7,860
Posts

Drives: E82 Mutt, M57 Truck
Join Date: Jul 2012
Location: Charleston

iTrader: (22)

Quote:
Originally Posted by amg6975 View Post
If you're not doing any sort of competition just pull your fenders and run a 245 or 255 square set up. No need to do the whole conversion for 20mm.
No, it's really not that easy or even possible to achieve a no rub 255 front on the stock 135i fenders. I have mine rolled, pulled and flared. Guess what? Bumper tabs. I also have 2.5" perches on my coilovers which reduces space up front in a big way.

Ground those down as far as they'll go and still hit them from time to time. My left fender is actually slightly torn from impacts with big tires under full compression while cornering. This happens once you weaken the corner after aggressive pull/flare.

245 square won't hold what I'm putting down. Haven't had a 255 on the rear since the year I bought it. Not looking to go backwards.

So yeah, there's a need, relatively speaking. +20mm (actually +30) is asking a lot from stock fenders, especially when running chunky tires.
__________________
2010 135i 6MT Jet Black
N54/3 FE82 Mutt | BUILD THREAD | GARAGE SALE

Last edited by ShocknAwe; 10-21-2019 at 12:26 PM..
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 08:27 AM.




1addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST