Tires for a specific rim size

[Cmonster0001]

Does anyone here in the forum bought aftermarket rims to replace the stock rims and have major issues when it comes to the correct tire sizing?
I bought 17 x 7.5 Racing Core Rims from Kaltire and using the OEM Goodyear Eagles RSA 215/45R17. The stock aluminum rims are 17 X 7 with my winter Toyo tires are now in storage. I had to buy new TPMS because the cost of labour would be expensive to remove my old ones to the new rims and installing a standard value on the stock rims. I had major issues with the TPMS and Kaltire had to reprogram my car to accept the new TPMS due to one technician didn't know how to program it in the first place when I had to go back there a couple of times and the problem is fixed.

Now the problem is the sizing on the next set of tires that I am going to get.

Keeping the 215/45R17 sizing and go to Yokohama, Toyo/Nitto, Bridgestone, Nokian, BF Goodrich, Michelin or any other guys.

225/45R17 - problem is it would make the speedometer go out of wack (speed increases)

225/40R17 - the only tires that I was recommended is Toyo/Nitto (Same company - Nitto is under Toyo)

Any Tire expert out there give me a good reason behind the tire size that I gave and the recommendation to consider?

[Gumby1800]

This basic Tire Size calculator will tell you what is compatible based on your current size tires:

http://www.1010tires.com/TireSizeCal...mp;vehicle=yes

Hope this helps!

[FSStrix09]

i had my rims changed and they removed the TPMS sensors from the OEM wheels without removing the tires. even if it cost $20 bucks per corner to remove the TPMS, that would be only $80. Even that is less than a single tire. Why would you buy a whole new set of tires? lol dont know.

Kaltire? this place is raping you it seems.

I changed my rims then when i had the car aligned at the stealership they compensated for oversized wheels and adjusted the speedo to read correctly, i didnt even ask, they just did it.


and keeping the tire 17" to another 17" wont really make any noticeable difference. now going from a 17 to a 19 then you will have a really noticeable wrong speedo reading.

[fishexpo101]

As long as you are "plus" sizing the tires and wheels (as you increase wheel diameter, you have to shorten the sidewall height to maintain the same overall diameter of the tire - regardless of the diameter of the wheel.

Take 205/55-16 being the OEM size. Jumping up to a 17" wheel, tire would have to be a 215/45-17.
An 18" wheel, tire would have to be a 225/40-18. A 19" wheel, tire would have to be a 225/35-19. Go 20" wheel, tire would have to be 235/30-20. Even then, each manufacturers tread design could influence how much offset there is in the speedo. Keeping with these numbers, generally will yield a 3% or less speedo discrepancies.

Wheel width also can be a factor, running a much wider wheel than recommened can "stretch" the tire. Sometimes this is done on purpose (IMO, a really bad idea from a decade of tire/wheel R&D and forensic work).

On this generation - I'd try and stick to 7"-8" wheel widths, depending on the diameter of the wheel. Any more and you'll likley run into clearance issues with the suspension and/or the body. That point, you'll have to roll the fender and/or run spacers. How much will be dictated by wheel offset.