255/35/18 vs. 255/40/18

ben.bell1987 · 06-29-2017, 11:42 AM

Currently running 255/35/18 on the rear but managed to get some cheap Bridgestone 255/40/18 tyres, took them to my local tyre shop and he said that it’s a bad idea to fit them as it could smash the transfer box. Anyone know if I can get away with this small difference?

I am aware that the speedo may be 3 or so % out. Also the car has been lowered about 30mm.

Thanks!

ben.bell1987 · 06-30-2017, 10:04 AM

anyone?

AndyS · 06-30-2017, 11:57 AM

Only a problem if your car is 4 wheel drive.

ben.bell1987 · 07-03-2017, 11:50 AM

Quote:

Originally Posted by AndyS

Only a problem if your car is 4 wheel drive.

Thank you, much appreciated.

E60525d · 07-15-2017, 03:51 AM

Did you get these tyres fitted in the end? Any feedback?

ben.bell1987 · 07-15-2017, 04:39 AM

Quote:

Originally Posted by E60525d

Did you get these tyres fitted in the end? Any feedback?

Yes, no problems at all fills the arch gap nicely but ride feels the same so can't complain.

E60525d · 07-15-2017, 12:46 PM

Good stuff, any pics? I'm surprised there is no improvement in ride. Would of thought a small improvement.

ben.bell1987 · 07-16-2017, 08:02 AM

Quote:

Originally Posted by E60525d

Good stuff, any pics? I'm surprised there is no improvement in ride. Would of thought a small improvement.

I'd say its better over speedbumps but the rides never been poor despite being lowered.

E60525d · 07-17-2017, 06:13 AM

Are you running run flats or standard?

ben.bell1987 · 07-17-2017, 03:58 PM

Quote:

Originally Posted by E60525d

Are you running run flats or standard?

Yeah runflats which are supposed to be louder but I can't tell this early.

06-29-2017, 11:42 AM	#1
ben.bell1987 Private 7 Rep 97 Posts Drives: 2012 F10 520D M Sport Join Date: Jun 2013 Location: Newcastle Upon-Tyne, UK iTrader: (0)	255/35/18 vs. 255/40/18 Currently running 255/35/18 on the rear but managed to get some cheap Bridgestone 255/40/18 tyres, took them to my local tyre shop and he said that it’s a bad idea to fit them as it could smash the transfer box. Anyone know if I can get away with this small difference? I am aware that the speedo may be 3 or so % out. Also the car has been lowered about 30mm. Thanks!
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06-30-2017, 10:04 AM	#2
ben.bell1987 Private 7 Rep 97 Posts Drives: 2012 F10 520D M Sport Join Date: Jun 2013 Location: Newcastle Upon-Tyne, UK iTrader: (0)	anyone?
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06-30-2017, 11:57 AM	#3
AndyS Private First Class 14 Rep 108 Posts Drives: 335i touring pre lci. Join Date: May 2014 Location: London iTrader: (0)	Only a problem if your car is 4 wheel drive. __________________ E91 335i. 220 wheels. Active Autowerkes intercooler. Custom Performance Engineering charge pipe. Tial bov. Bms dci. Bilstein b14 coilovers. Roof rail delete. Secondary cat delete. Custom remap. 420 bhp
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07-15-2017, 03:51 AM	#5
E60525d Lieutenant Colonel 292 Rep 1,537 Posts Drives: 330d M Sport LCI Join Date: Mar 2010 Location: UK iTrader: (0)	Did you get these tyres fitted in the end? Any feedback?
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07-15-2017, 12:46 PM	#7
E60525d Lieutenant Colonel 292 Rep 1,537 Posts Drives: 330d M Sport LCI Join Date: Mar 2010 Location: UK iTrader: (0)	Good stuff, any pics? I'm surprised there is no improvement in ride. Would of thought a small improvement.
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07-17-2017, 06:13 AM	#9
E60525d Lieutenant Colonel 292 Rep 1,537 Posts Drives: 330d M Sport LCI Join Date: Mar 2010 Location: UK iTrader: (0)	Are you running run flats or standard?
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