225/40 is the size i run on 7.5" wide medusas, and i can't wait for warm weather so I can put them back on my car... your call though. I did a lot of research and ended up choosing 225/40/18 bridgestone potenza pole position RE050A. I loved them last summer and they're crying in my shed right now...
Yet another wheel/tire question
I have these:
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And am having the hardest time selecting the best tire size! They are 18x7.5s and I've been considering 225/40/18 kumhos but idk..
And obviously I don't want them to run nor get insanely low gas mileage
Answer?
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And am having the hardest time selecting the best tire size! They are 18x7.5s and I've been considering 225/40/18 kumhos but idk..
And obviously I don't want them to run nor get insanely low gas mileage
Answer?
2
1 - 11 of 11 Posts
I had a nice reply with lots of help but when I tried to post it, the board basically told me to stick it up my you know what.
What you want to do, is keep the overall diameter of your tires the same.
Search google for a "tire size plus one calculator", and you should find something.
A basic breakdown is this: if you are running a 225/40/18, 225 is the width of the tire at the widest point. 40 is the ratio of sidewall to width, so in this case, 40% of 225. So you have 18" tire, with a 90mm sidewall. Now figure out what the overall diameter is, and then do the same for what you are running now.
Or, you can just go here: http://www.1010tires.com/tiresizecalculator.asp
![]()
That better work this time.
![]()
What you want to do, is keep the overall diameter of your tires the same.
Search google for a "tire size plus one calculator", and you should find something.
A basic breakdown is this: if you are running a 225/40/18, 225 is the width of the tire at the widest point. 40 is the ratio of sidewall to width, so in this case, 40% of 225. So you have 18" tire, with a 90mm sidewall. Now figure out what the overall diameter is, and then do the same for what you are running now.
Or, you can just go here: http://www.1010tires.com/tiresizecalculator.asp
That better work this time.
2
Re: (Kallvin22)
tell us how you like them http://********************/smile/emthup.gif
tell us how you like them http://********************/smile/emthup.gif
1 - 11 of 11 Posts
