18inch wheels... - MINI Cooper Forum

MiniLover247 · #1 (**permalink**) Jun 2nd, 2006, 04:18 AM

hey,
i don't know if this should be on this topic, or in the Engine and Drivetrain Tuning topic, but if i bought 18 inch wheels to replace 17s, what would i have to do to get the speedometer/odometer set with the new dimensions?

thanks,
michael

nylo · #2 (**permalink**) Jun 2nd, 2006, 08:42 AM

As long as you go with a lower profile tyre, thus leaving the rolling diameter pretty much the same, you shouldn't have to do anything to the speedo...

There are loads of us running 18s, and I doubt very much anyone has done anything to their speedo

Neil the Hat · #3 (**permalink**) Jun 2nd, 2006, 11:09 AM

As Nylo said...

I recently went from 205/45/17 tyres to 215/35/18.

Now 50mph on my speedo is about 48mph on a standalone satnav.

That is more than accurate for me!

aceman · #4 (**permalink**) Jun 6th, 2006, 05:22 AM

Same here, I have 215/35/18 up from the 16's and the speedo is still spot on :P

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