captain caveman
Member
Whats the best profile on 18,s?
Ive read 40 45 and 50 although 50 must be huge.
Some seem to use both 40 and 45?
Ive read 40 45 and 50 although 50 must be huge.
Some seem to use both 40 and 45?
Tyre profile on 18,s
- Thread starter captain caveman
- Start date
go 40 & 35 or 45 & 40 depending on what you want from the tyres & carI'd go with the M Spec sizes so 225x45 and 255x40. Will be more comfortable than the standard 225x40 and 255x35. Very tiny decernable visual difference and they look fine on the M cars!
Only difference is it makes about a 3% difference to your speedo, however as the cars under read by about 3% or so in the first place it actual results in a more accurate speedo! a win win then.
Some members have previously moved to the above with no issues reported and Ill be doing it when my current tyres are worn down, although at 2-3k a year, it might be while yet!
Only difference is it makes about a 3% difference to your speedo, however as the cars under read by about 3% or so in the first place it actual results in a more accurate speedo! a win win then.
Some members have previously moved to the above with no issues reported and Ill be doing it when my current tyres are worn down, although at 2-3k a year, it might be while yet!
M spec does make tyres more expensive though as they are less common.
I've just bought two new 225/40/18 front tyres and wishing I had got 235/40/18 for a bit more front grip. The newer BMW cars are now using a 2cm stagger rather than 3cm like they used to.
When i change the rears soon I think I will try 245/40/18 which are about £50 cheaper per pair. That will give less of a stagger plus it will fit on the standard 8.5J rim better as 255 is as big as you should go, 235 or 245 are the ideal sizes. For example a new M3 runs 255 up front but on a 9J, a Nissan GTR does the same on a 9.5J and an F-Type R the same again on a 10.5.
If an M with more power only needs 255 then my N52 will be fine with 245, plus the 135 comes with 245 and that has c.300bhp & lb/ft.
I've just bought two new 225/40/18 front tyres and wishing I had got 235/40/18 for a bit more front grip. The newer BMW cars are now using a 2cm stagger rather than 3cm like they used to.
When i change the rears soon I think I will try 245/40/18 which are about £50 cheaper per pair. That will give less of a stagger plus it will fit on the standard 8.5J rim better as 255 is as big as you should go, 235 or 245 are the ideal sizes. For example a new M3 runs 255 up front but on a 9J, a Nissan GTR does the same on a 9.5J and an F-Type R the same again on a 10.5.
If an M with more power only needs 255 then my N52 will be fine with 245, plus the 135 comes with 245 and that has c.300bhp & lb/ft.