How crazy would 225's all around be on chipped 135i?

showstopper9ren · 07-20-2015, 09:03 PM

So I've found some rims for a good price that I really like BUT they are 18x8 all around. (I believe the offset is 35)

It seems 225/40/18 all around would be the choice for an 18x8 wheel, but would I be absolutely crazy to put a 225 wheel on the back of a chipped 135i pushing around 390 horsepower (by chipped I mean re-mapped)

Note: What if I got some very sticky tires for the back like some summer only Pirellis, Bridgestones, Michelins etc. and then just some basic all-seasons up front.

aloksatoor · 07-20-2015, 09:22 PM

you will get good forward traction and bad braking since the the fronts will do much of the stopping

brocklanders · 07-20-2015, 09:37 PM

Go with 225/40 or 235/40 in front and 235/40 or 245/35 in the rear. You may need modification to combat rubbing in the front with a 235, also I think from my research 18x8 et 40 would be ideal, I'm sure someone who haa done an eight inch wheel will chime in.

The Wind Breezes · 07-20-2015, 10:01 PM

Don't buy those wheels.

showstopper9ren · 07-20-2015, 10:12 PM

Quote:

Originally Posted by brocklanders

Go with 225/40 or 235/40 in front and 235/40 or 245/35 in the rear. You may need modification to combat rubbing in the front with a 235, also I think from my research 18x8 et 40 would be ideal, I'm sure someone who haa done an eight inch wheel will chime in.

On a total wheel diameter calculator an 18x8 wheel with 225/40/18 is 1.3% taller than 18x8 back wheel with 245/35/18 ...is the 1.3% negligible?

Ginger_Extract · 07-20-2015, 11:38 PM

225/40 will be fine for a street car, just buy good rubber. Compound > width.

Maxsensation · 07-22-2015, 01:24 AM

get wider wheels and tires...!!!!!

lowbudgethero · 07-22-2015, 11:31 PM

Quote:

Originally Posted by brocklanders

Go with 225/40 or 235/40 in front and 235/40 or 245/35 in the rear. You may need modification to combat rubbing in the front with a 235, also I think from my research 18x8 et 40 would be ideal, I'm sure someone who haa done an eight inch wheel will chime in.

I run the stock 18x8.5" on the front with a 10mm spacer (effectively an et42) would fit better if I had gone 235/245 over the 255s I have on now.

235 + 8" et 35 might be tight

inFamousKicks · 07-23-2015, 09:21 PM

Front will work, but it'll be tight and you'll probably have some rubbing. If you want to put down that power effectively, get something with a higher offset and possibly an inch wider in the back. That way you'll be able to run bigger rubber.

lowbudgethero · 07-24-2015, 05:52 AM

I wouldn't mix tires on the car either go full all season or summer. I run 225/45 17s in the winter and there isn't much grip, I typically flash back to stock power infact.

showstopper9ren · 07-24-2015, 04:20 PM

Just some food for thought here, but a 2015 BMW 435i coupe with base 18's comes with 225/45/18 all around.

I realize this 435i comes with 300 horsepower and the re-mapped 135i is pushing out a lot more, but the reason I bring this up is that with the right rubber, BMW is of the opinion that they don't seem to have a problem putting 225's all around on a powerful sports car

ShocknAwe · 07-24-2015, 08:05 PM

Quote:

Originally Posted by showstopper9ren

Just some food for thought here, but a 2015 BMW 435i coupe with base 18's comes with 225/45/18 all around.

I realize this 435i comes with 300 horsepower and the re-mapped 135i is pushing out a lot more, but the reason I bring this up is that with the right rubber, BMW is of the opinion that they don't seem to have a problem putting 225's all around on a powerful sports car

Remember, longer wheelbase too, helps stabilize the rear end, necessitating less tire.

Pissoff · 07-24-2015, 08:19 PM

Quote:

Originally Posted by ShocknAwe

Remember, longer wheelbase too, helps stabilize the rear end, necessitating less tire.

The longer the wheel base the better the weight transfer on acceleration. It gives the car more leverage. This is why top fuel dragsters are so long. It gives more leverage for weight transfer to the rear wheels.

ShocknAwe · 07-24-2015, 08:31 PM

Quote:

Originally Posted by Coleroad

The longer the wheel base the better the weight transfer on acceleration. It gives the car more leverage. This is why top fuel dragsters are so long. It gives more leverage for weight transfer to the rear wheels.

1anG · 07-26-2015, 01:58 PM

DO it

Gary@TireRack · 07-27-2015, 09:17 AM

Quote:

Originally Posted by Ginger_Extract

225/40 will be fine for a street car, just buy good rubber. Compound > width.

+1

Getting a set of tires with more dry grip can trump a 20mm-30mm difference in tire width.

E82MSport · 07-27-2015, 09:59 AM

Quote:

Originally Posted by Gary@TireRack

+1

Getting a set of tires with more dry grip can trump a 20mm-30mm difference in tire width.

I'll + 1 this as well.

I would just get a set of cheap all-seasons and drive sideways everywhere.

Reminds me of this.

Kreester · 07-31-2015, 12:08 PM

Quote:

Originally Posted by Gary@TireRack

+1

Getting a set of tires with more dry grip can trump a 20mm-30mm difference in tire width.

+1

Don´t just stare at width. Compound is way more important.
Wider wheel also gets heavier.
I use 225/45/17 Advan AD08 for DD and trackday (wet) on 17x8 ET40.
225/45/17 R888 for dry trackdays on 7,5x17 8,5x17 Mstyle68.
Cobb tuned 135i with QUAIFE LSD works great with squared 225´s.

07-20-2015, 09:03 PM	#1
showstopper9ren New Member 2 Rep 7 Posts Drives: Pontiac G8 Join Date: Apr 2015 Location: Layton, UT iTrader: (0)	How crazy would 225's all around be on chipped 135i? So I've found some rims for a good price that I really like BUT they are 18x8 all around. (I believe the offset is 35) It seems 225/40/18 all around would be the choice for an 18x8 wheel, but would I be absolutely crazy to put a 225 wheel on the back of a chipped 135i pushing around 390 horsepower (by chipped I mean re-mapped) Note: What if I got some very sticky tires for the back like some summer only Pirellis, Bridgestones, Michelins etc. and then just some basic all-seasons up front.
	Appreciate 0 Tweet Quote

07-20-2015, 09:22 PM	#2
aloksatoor Second Lieutenant 21 Rep 232 Posts Drives: Carrera S PDK Join Date: Aug 2014 Location: Walnut Creek, CA iTrader: (0)	you will get good forward traction and bad braking since the the fronts will do much of the stopping
	Appreciate 0 Quote

07-20-2015, 09:37 PM	#3
brocklanders Major 106 Rep 1,428 Posts Drives: the uno, mineral white Join Date: Mar 2010 Location: houston iTrader: (3) Garage List 06 325 [0.00]	Go with 225/40 or 235/40 in front and 235/40 or 245/35 in the rear. You may need modification to combat rubbing in the front with a 235, also I think from my research 18x8 et 40 would be ideal, I'm sure someone who haa done an eight inch wheel will chime in.
	Appreciate 0 Quote

07-20-2015, 10:01 PM	#4
The Wind Breezes Lieutenant Colonel 912 Rep 1,850 Posts Drives: 135i N55 DCT Join Date: Apr 2015 Location: USA iTrader: (0)	Don't buy those wheels.
	Appreciate 1 Quote

07-20-2015, 11:38 PM	#6
Ginger_Extract California-bound 385 Rep 1,480 Posts Drives: BMW 135i Join Date: Jan 2013 Location: Los Angeles, CA iTrader: (3)	225/40 will be fine for a street car, just buy good rubber. Compound > width. __________________ Streets of Willow: 1:27.7 CW 11/15/15; 1:29.5 CCW 8/15/15 \|\|\|\| Autoclub Speedway ROVAL (CCW): 1.52.6 - 12/2/17 Willow Springs - Big Willow (CW): 1:35.8 - 3/31/18 \|\|\|\| Buttonwillow #13 (CW): 1:59.3 1/27/18 https://www.facebook.com/JakeStumphRacing \|\|\|\| http://www.youtube.com/user/RaceMeMZ3
	Appreciate 0 Quote

07-22-2015, 01:24 AM	#7
Maxsensation Lieutenant 54 Rep 485 Posts Drives: 2011 128i Join Date: Mar 2012 Location: Somewhere? iTrader: (3)	get wider wheels and tires...!!!!!
	Appreciate 0 Quote

07-23-2015, 09:21 PM	#9
inFamousKicks Member. 201 Rep 827 Posts Drives: 2011 135i Join Date: Mar 2014 Location: Brooklyn, NY iTrader: (1)	Front will work, but it'll be tight and you'll probably have some rubbing. If you want to put down that power effectively, get something with a higher offset and possibly an inch wider in the back. That way you'll be able to run bigger rubber. __________________ '11 N55 135i 6MT \|\| ///M-Sport\|\| Alpine White/Coral Red\|\| KW V1
	Appreciate 0 Quote

07-24-2015, 05:52 AM	#10
lowbudgethero Captain 125 Rep 750 Posts Drives: '98 Z3M (gone), '09 135i Join Date: Feb 2013 Location: 908 iTrader: (0) Garage List 2009 BMW 135i [8.50]	I wouldn't mix tires on the car either go full all season or summer. I run 225/45 17s in the winter and there isn't much grip, I typically flash back to stock power infact.
	Appreciate 0 Quote

07-24-2015, 04:20 PM	#11
showstopper9ren New Member 2 Rep 7 Posts Drives: Pontiac G8 Join Date: Apr 2015 Location: Layton, UT iTrader: (0)	food for thought Just some food for thought here, but a 2015 BMW 435i coupe with base 18's comes with 225/45/18 all around. I realize this 435i comes with 300 horsepower and the re-mapped 135i is pushing out a lot more, but the reason I bring this up is that with the right rubber, BMW is of the opinion that they don't seem to have a problem putting 225's all around on a powerful sports car
	Appreciate 0 Quote

07-26-2015, 01:58 PM	#15
1anG New Member 0 Rep 5 Posts Drives: Audi S3 Join Date: Jul 2015 Location: NJ iTrader: (0)	DO it
	Appreciate 0 Quote