Speedometer affected by changing rims?
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Road Master
Joined: Apr 2009
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From: Rocky Mtn High CO
Speedometer affected by changing rims?
I know the 21 will increase the tire diameter just 1" over the stock 17 on an 09 because of the shorter tire sidewall. I didn't see how much of a change in diameter the 18 makes on the rear tire.
Which wheel does the speedometer read from - front or back?
For those of you that have gone to the 18/21 setup, how much difference did you see in your speedometer readings?
What about the 18/18 and 17/19 setups?
I'm also looking at tire load ratings before I make my final decision on which rims to go with but I have to get rid of this D407F soon - it's taking the fun out of riding!
Which wheel does the speedometer read from - front or back?
For those of you that have gone to the 18/21 setup, how much difference did you see in your speedometer readings?
What about the 18/18 and 17/19 setups?
I'm also looking at tire load ratings before I make my final decision on which rims to go with but I have to get rid of this D407F soon - it's taking the fun out of riding!
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Road Master
Joined: Apr 2009
Posts: 1,137
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From: Rocky Mtn High CO
Part #1414900 - 130/70R18 TL 63H (H) - raises the front end 1/4" and drops load rating 39 lbs (6%).
Part #1307600 - 210/50ZR17 TL (78W) - nearly identical tire diameter to stock (so no speedo change), and drops the load rating 82 lbs (8%).
They also have a 200/50ZR17, but it drops the load rating 16%.
Anyone know if a 210 will fit under the stock rim for the 180?
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