Let me start off by apologizing if this has been covered. I did a search and read through many pages and could not come up with a conclusion. If you have a link to where this is covered please let me know.

I have a 2012 Countryman S. I would like to go bigger tires without the lift. So far, from my research, 215/55R17 seems to be the biggest I can go.

Has anyone tried 215/60R17? I also came across a thread where they said 27" is the biggest diameter you would want to go, but curious if can go .2 higher.

215/55R17 --> 26.3" high / 8.5" wide
215/60R17 --> 27.2" high / 8.5" wide
205/60R17 --> 26.7" high / 8.1" wide

As stated, I have read about using the 215/55R17, has anyone tried the other two sizes?

Thanks

Ace - Houston

 

i run 225/50R18s on my cms all4, up sized from 225/45R18

225/50 is 26.9 inch OD
225/45 is 25.9 inch OD

for winter i run 205/70R16 on mini oem 16x6.5 et 46 alloys

205/70 is 27.3 inch OD

hope this helps

 

Thank You.

I was curious about 225, but seemed a bit wide. If you have no rubbing issues, I am now considering 225/55/17 which would put me at 26.7 high" but 8.9" wide.

Would you happen to have any pictures? Curious how the 225's look.

--Ace

 

left to right
225/50R18
205/70R16
225/45R18

no rubbing at all, been running the larger sizes over 4 years now

 

just found there closeups ... thiught i had deleted them

205/70R16 and 225/50R18

 

Right on.. Thank you, appreciate you taking time and answering my concerns.

 

sizes can be within 10%,,,,of ratios,,,,,, rim width changes size,,, some specs give actual size in a specific rim. if not and you are close ask the sales rep

 

Not following...

 

the aspect ratio on the side of the tire isnt the actual size but will be within 10% so a smallish 205 may be about the same as a large 195. some specs show the actual size on a rim. Then a 205 on a 6in rim will be a bit smaller than on a 7.5in rim as the sidewall spreads a bit more, also some specs will give the contact patch width and the overall width. some 205's will be wider but have a small contact patch. just to go all out there are some specs for rolling raduis or revs per mile that can sometimes help understand sidewall stiffness