Changing Wheel Size?

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Aug 10, 2008 | 12:48 AM

Whitecloud

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Changing Wheel Size?

If I change the size of my rims on my 87, from 16X9.5 to 17X9.5 do I need to adjust the speedometer. I haven't seen this question posted since I have been on the forum. I'm sure it has but trying to make my winter shopping list.

Aug 10, 2008 | 01:15 AM

LT1 Spirit

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Joined: Mar 2008

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From: York PA

I think if you go with a lower profile tire then you have now it will offset the bigger rim

Aug 10, 2008 | 04:31 AM

topgunvette

Melting Slicks

Joined: Nov 2003

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you should be okay, the digital dash we got isn't all that accurate to being with.

Aug 10, 2008 | 07:50 AM

convas

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From: Melbourne Victoria

This website will help you compare sizes

http://www.miata.net/garage/tirecalc.html

Aug 10, 2008 | 10:46 AM

vader86

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From: Athens AL

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No, the lower profile tires you normally see for that size rim arent going to throw off your speedo that much.

Aug 10, 2008 | 12:37 PM

All2kool

Drifting

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From: Beaverton Oregon

Quote:

Originally Posted by todds87dream

If memory serves me correctly, the tire for the '87 was a 255/50/16. When upgrading to 17" Wheels, change the tire to 275/40/17 to maintain almost the same tire height. This is what I did and I think the change in overall tire/wheel size changed insignificantly.