Proper tire size for 20" rims

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Jul 13, 2008 | 09:44 AM

Kendrick

Thread Starter

Joined: Jul 2008

Posts: 11

Proper tire size for 20" rims

Hello,

Anyone here running on 20" rims on the H3? What would be the proper tire size for the H3 on 20 inchers? Is it 305/50 20?

thanks!
Ken

Jul 13, 2008 | 11:08 AM

Bitdriver

Joined: Jun 2008

Posts: 75

From:

RE: Proper tire size for 20" rims

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

A nice little utility for getting as close as you can to stock height/etc for speedo calcs

Jul 13, 2008 | 11:28 AM

sjr21805

Senior Member

Joined: Jan 2007

Posts: 114

From: Lakeland/Tampa Florida

RE: Proper tire size for 20" rims

mine are LT275/65R20[align=left] [/align]

Jul 13, 2008 | 02:55 PM

Kendrick

Thread Starter

Joined: Jul 2008

Posts: 11

RE: Proper tire size for 20" rims

Thanks! that tire calculator is exactly what I wanted to find.

Jul 14, 2008 | 12:55 PM

D VADER

Senior Member

Joined: May 2007

Posts: 1,473

From: Central Ohio

RE: Proper tire size for 20" rims

275/65/20 right? I may go with 256/65/20. Its still the right diameter but a smaller foot print(width). Maybe I'll save some gas.

Jul 14, 2008 | 01:07 PM

Kendrick

Thread Starter

Joined: Jul 2008

Posts: 11

RE: Proper tire size for 20" rims

According to the tire calculator, the 275/55 20 would be a better size as it is only 1.1% slow in the speedo reading.

If you go 275/65 20, that's 3% too slow. So speedo reading 60mph you are really going 64.3mph

Jul 14, 2008 | 03:17 PM

Bitdriver

Joined: Jun 2008

Posts: 75

From:

RE: Proper tire size for 20" rims

Keep in mind too Kendrick, that you CAN recalibrate the speedo with programmers (Hypertech etc).

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