How will this affect my speedometer?

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May 10, 2012 | 03:46 PM

Danwolski

Thread Starter

Joined: Nov 2011

Posts: 1,033

Likes: 13

From: Near Chicago

How will this affect my speedometer?

I just bought some ap2 sized rotas, and im planning on mounting them on my ap1. Will this effect the speedo? How will it change? And how could I get it calibrated to go with the new rims?

May 10, 2012 | 04:17 PM

spets

Joined: Apr 2009

Posts: 2,521

Likes: 1

From: Renton, WA

we need to know the tire sizes.

May 10, 2012 | 04:52 PM

Danwolski

Thread Starter

Joined: Nov 2011

Posts: 1,033

Likes: 13

From: Near Chicago

Quote:

Originally Posted by spets

we need to know the tire sizes.

Im going to use stock ap2 tire size on a rim thats the size of a stock ap2 rim.

May 10, 2012 | 06:08 PM

S2k007

Registered User

Joined: Jan 2003

Posts: 3,081

Likes: 2

From: Temecula, CA

Than nothing will change. The diameter of the wheel should still be around 25 inches.

Use this to see exactly how much:

http://www.willtheyfit.com/

May 11, 2012 | 03:51 AM

NebraskaS2k

Joined: Aug 2008

Posts: 207

Likes: 0

From: Ponca, NE

When I change from spring/fall (205/55 & 225/50 on standard ap1 rims) to summer (215/45 & 255/45 on 17" rims) I use my gps to check my speed and then adjust my speed accordingly.

May 11, 2012 | 08:06 AM

Conedodger

Joined: Jul 2003

Posts: 13,471

Likes: 35

From: Upstate NY

Quote:

Originally Posted by NebraskaS2k

When I change from spring/fall (205/55 & 225/50 on standard ap1 rims) to summer (215/45 & 255/45 on 17" rims) I use my gps to check my speed and then adjust my speed accordingly.

If you used a 255/40-17 on the rear, like Honda did for the CR, there would be almost no difference compared to the 225/50-16.