Widest possible tire?

Hooy · 02-01-2011, 02:02 PM

I don't know how tires work very well, so I was wondering what the maximum safe tire size I could get on my 17x8 wheels.

235's?

ninesixtwo · 02-01-2011, 02:45 PM

at least 245/40

Mr. ///M3 RD · 02-01-2011, 03:08 PM

I recommend you use Google once in a while like asking

Maximum Tire Size

then you get helpful feedback like this

CLICK

or check with your dealer.

Also do try to use the table above from TireRack enter your wheel size and existing tire then play with the tire size it will give you clearances etc. Still someone here from Tire Rack will most likely give you the widest tire you can run on your car. The fellows from Tire Rack are very helpful.

The final decision will be yours. Depending on what car you drive adjustments may be required on your Speedo or you may even need to have your fenders rolled so that the tires do not touch and rub. Your best source of information would be your dealer or someone from TireRack.

Hope you find what you seek

Hooy · 02-01-2011, 03:43 PM

Quote:

Originally Posted by Rolf-Dieter

I recommend you use Google once in a while like asking

Maximum Tire Size

then you get helpful feedback like this

CLICK

or check with your dealer.

Also do try to use the table above from TireRack enter your wheel size and existing tire then play with the tire size it will give you clearances etc. Still someone here from Tire Rack will most likely give you the widest tire you can run on your car. The fellows from Tire Rack are very helpful.

The final decision will be yours. Depending on what car you drive adjustments may be required on your Speedo or you may even need to have your fenders rolled so that the tires do not touch and rub. Your best source of information would be your dealer or someone from TireRack.

Hope you find what you seek

Thanks for the advice, but all online tire selectors will give me 225/45 which I already know since that's what came from the factory, and the table doesn't tell me how big the tire can be without being unsafe. Dealer will suggest the same as it's probably a safety issue to recommend anything higher. I believe these kind of judgement are best made by people with experience hence why I posted instead of settling for my own conclusions.

remmib · 02-01-2011, 06:00 PM

You can do 245/45/17.

MKR_DmD · 02-01-2011, 06:06 PM

I ran 255 on 8" rims with no problem.

VMRWheels · 02-01-2011, 06:52 PM

Quote:

Originally Posted by remmib

You can do 245/45/17.

This is the widest I would recommend on a 8.0" wide wheel as well.

-Charles@VMRWheels

Hooy · 02-01-2011, 07:15 PM

Quote:

Originally Posted by remmib

You can do 245/45/17.

Quote:

Originally Posted by DrivinMissDaisy

I ran 255 on 8" rims with no problem.

Did either of you guys have handling issues with such a wide contact patch? I'm afraid of over or under inflation and sloppy handling from the bulging sidewalls.

ALUFELGEN · 02-01-2011, 10:30 PM

I would not recommend anything over a 235/40/17. A 245 on a 8.0" might cause excessive bulging and cause the car to feel "loose". A 235 will be wide enough for additional traction and will not deteriorate the suspension dynamics.

Matt

02-01-2011, 02:02 PM	#1
Hooy Colonel 205 Rep 2,770 Posts Drives: E92 328i, E92 M3 Join Date: Sep 2009 Location: Houston, TX iTrader: (12) Garage List 2008 E92 328 [5.00]	Widest possible tire? I don't know how tires work very well, so I was wondering what the maximum safe tire size I could get on my 17x8 wheels. 235's?
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02-01-2011, 02:45 PM	#2
ninesixtwo Second Lieutenant 6 Rep 288 Posts Drives: E91 Join Date: May 2010 Location: Bay Area, CA iTrader: (0)	at least 245/40
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02-01-2011, 03:08 PM	#3
Mr. ///M3 RD Happy Camper 613 Rep 7,869 Posts Drives: C63 AMG & 280 SL on Weekends : Join Date: May 2010 Location: GTA, Ontario - Canada iTrader: (0) Garage List 1969 Restored Merce ... [7.50] 2011 M3 Coupe TRADED [7.34] 1987 BMW 535is [1.00] Cars from the Past [6.50] The ///M3 Engine S65 [9.59]	I recommend you use Google once in a while like asking Maximum Tire Size then you get helpful feedback like this CLICK or check with your dealer. Also do try to use the table above from TireRack enter your wheel size and existing tire then play with the tire size it will give you clearances etc. Still someone here from Tire Rack will most likely give you the widest tire you can run on your car. The fellows from Tire Rack are very helpful. The final decision will be yours. Depending on what car you drive adjustments may be required on your Speedo or you may even need to have your fenders rolled so that the tires do not touch and rub. Your best source of information would be your dealer or someone from TireRack. Hope you find what you seek __________________ Cheers, Rolf-Dieter Life will take us to some interesting places, fortunately The ///M3 will too with a many of us know this very well, now my C6.3 AMG with 487 HP does it too ---> Click here for some good stuff I found Last edited by Mr. ///M3 RD; 02-01-2011 at 03:16 PM.. Reason: minor edit
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02-01-2011, 06:00 PM	#5
remmib General 1568 Rep 29,202 Posts Drives: 2013 F10 520d M-Sport Join Date: Feb 2006 Location: Norway iTrader: (0)	You can do 245/45/17. __________________ F10 520d M-Sport Alpine White \| HRE P43SC 20x9+20x11 \| Michelin PSS 255/35+295/30 \| KW V3 Coilover \| M5 Front Sway Bar + M550d Rear Sway Bar \| 3DDesign Front Lip \| BMW M Performance CF Spoiler \| BMW M Performance Diffuser \| BMW M Performance Black Grills \| BMW M Performance Pedals \|
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02-01-2011, 06:06 PM	#6
MKR_DmD Lieutenant 6 Rep 494 Posts Drives: 16 Jeep Cherokee Join Date: May 2010 Location: Germany iTrader: (3)	I ran 255 on 8" rims with no problem.
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02-01-2011, 10:30 PM	#9
ALUFELGEN 171 Rep 2,057 Posts Drives: E92 M3 Join Date: Nov 2008 Location: South Florida iTrader: (5)	I would not recommend anything over a 235/40/17. A 245 on a 8.0" might cause excessive bulging and cause the car to feel "loose". A 235 will be wide enough for additional traction and will not deteriorate the suspension dynamics. Matt
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