Touring Tire Question (Aspect Ratio)
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Road Warrior
Joined: May 2012
Posts: 1,388
Likes: 132
From: Baltimore, MD
Touring Tire Question (Aspect Ratio)
So I need new tires on my RK Custom. Currently, it has the Dunlop 402's on it. Sizes are:
Front: MT90B16 (size is 130/90-16)
Read: MU85B16 (size is 140/90-16)
I've found a good deal on line on the Michelin Commander II's. But my questions is one of sizing. The Michelin's are:
Front size 130/90-16
Rear size 140/90-16
So that all checks. The difference is that the Dunlop rear's aspect ratio is 85 while the Michelin rear's is 90. I know what aspect ratio is, but I'm curious whether this 5% makes any difference at all in the fit of the tire. A higher sidewall could be a problem, but I can't believe it would cause any rubbing or interference. Besides, the Michelins are listed as an exact fit for my bike.
So should I care about this 5% difference in AR?
Note, I don't want this to be a thread on what tires are "best". It's a technical question about fit/size.
Thanks,
Steve
Front: MT90B16 (size is 130/90-16)
Read: MU85B16 (size is 140/90-16)
I've found a good deal on line on the Michelin Commander II's. But my questions is one of sizing. The Michelin's are:
Front size 130/90-16
Rear size 140/90-16
So that all checks. The difference is that the Dunlop rear's aspect ratio is 85 while the Michelin rear's is 90. I know what aspect ratio is, but I'm curious whether this 5% makes any difference at all in the fit of the tire. A higher sidewall could be a problem, but I can't believe it would cause any rubbing or interference. Besides, the Michelins are listed as an exact fit for my bike.
So should I care about this 5% difference in AR?
Note, I don't want this to be a thread on what tires are "best". It's a technical question about fit/size.
Thanks,
Steve
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Verify the load rating is equal to the factory tires and look around for a revolutions per mile statement. The taller tire will slightly lower the speedo indication for a given actual speed.
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Road Warrior
Joined: May 2012
Posts: 1,388
Likes: 132
From: Baltimore, MD
Nice calculator, hattitude! Both tires are the same (130/90-16 and 140/90/16) so no probs there. And btsom, good suggestion about the load rating. The Mich front is actually higher (rear's the same). Thanks for the help. You've put my mind at ease! Always preferred Michelin cage tires, so I'm looking forward to these...
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Road Captain
Joined: Jun 2011
Posts: 594
Likes: 10
From: Seminole County, FL
Been using the Metzeler 880's about 4 tires now, wanted to try the 888's, but even though they are in everybody's catalog they aren't going to be released for a few months. BS!
I'm going to try a Continental this time.
I'm going to try a Continental this time.
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