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largest tire size on stock rims
- Thread starter wraith02
- Start date
For safety purpose I would NOT recommend you running 235's on stock 7.5 wheels. cuz there is a chance that you will be premature BEAD failure due to the side wall flex on the tire. Stick with 225 and your safe!! otherwise go with new rims at 8 or 8.5 then you can safely run 235's
Y are you guys changing from 215/45 to 225/40 instead of 225/45? Is there clearance isssues?
Yes, some have had clearance issues, especially when going wider on the wheel and lower on the offset. Also the choices in 225/40 are more plentiful and reasonably priced then the 225/45s and especially a 215/45 (if you can actually find them).
I'm finding myself shoping for some decent 225/40s to hold me over for another 3-4 months before I upgrade wheel size and tire.
silversurfer513
Member
- :
- 2010 Subaru WRX STi
I just put on a set of 225/40 ContiExtreme Contacts with no issues. Crossing my fingers that they will be good enough AS for the winter here in Cincy.
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60181
I just put on a set of 225/40 ContiExtreme Contacts with no issues. Crossing my fingers that they will be good enough AS for the winter here in Cincy.
Any balancing issues with the ContiExtremes? I know them to be a touchy tire for balancing. I tried them for a week or so on a previous car and the did great in rain, but I never got them to balance smooth.
silversurfer513
Member
- :
- 2010 Subaru WRX STi
Any balancing issues with the ContiExtremes? I know them to be a touchy tire for balancing. I tried them for a week or so on a previous car and the did great in rain, but I never got them to balance smooth.
I seem to get a slight vibration when they are cold at start up but goes away after a few miles. They were installed and balanced by one the best tire guys here locally so Im not sure how much better we can get it. Good info though, assures me I wasnt crazy!
Y are you guys changing from 215/45 to 225/40 instead of 225/45? Is there clearance isssues?
And the fact that the speedo will be off.
Y are you guys changing from 215/45 to 225/40 instead of 225/45? Is there clearance isssues?
With a Aspect ratio of 45 you are asking for rubbin in the rear for sure, most of the time if you want to increase the width of a tire you HAVE to drop the aspect ratio down to compensate for the larger width.
Ie, 215/45 to 225 you have to drop the aspect ratio by 5mm, that's why if you check most places will always be 225/40 just so that you don't get rubbing on the fenders, but again that's totally your choice.
225/45-18 shouldnt be a problem. Thats the stock RX-8 size and people run those on the MS3 all day long without rubbing.
Aspect ratio is in % just a heads up.
So a 225/40-18 is actually a smaller outside diameter than the stockers, will cause the speedo to read fast. The closest match-up would be a 235/40-18, but like everyone has said, would not be recommended on the stock wheels.
Aspect ratio is in % just a heads up.
So a 225/40-18 is actually a smaller outside diameter than the stockers, will cause the speedo to read fast. The closest match-up would be a 235/40-18, but like everyone has said, would not be recommended on the stock wheels.
225/45-18 shouldnt be a problem. Thats the stock RX-8 size and people run those on the MS3 all day long without rubbing.
Aspect ratio is in % just a heads up.
So a 225/40-18 is actually a smaller outside diameter than the stockers, will cause the speedo to read fast. The closest match-up would be a 235/40-18, but like everyone has said, would not be recommended on the stock wheels.
would you need to get a wider rim? so 7.5 or 8?
would you need to get a wider rim? so 7.5 or 8?
Yep, exactly. 8" would be perfect for a 235.
Yeah I know it would be a little better but I had a 03 20th anniversary edition GTI and ran pilot sport AS on 18 inch wheels and that thing could go thru anything. Would drive 50 miles to work in 4 inches of snow!!!
So I have confidence in a wide tire in the snow especially a blizzak thats made for it. Hopefully some more ppl will offer some advice and first hand experience.
So I have confidence in a wide tire in the snow especially a blizzak thats made for it. Hopefully some more ppl will offer some advice and first hand experience.
