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Discussion Starter · #1 ·
Hi,

I own a 2007 Speedmaster and want to replace front and rear tires. Here's the advice I need. The front tire calls for a 110/80-18 but the most common tire is 110/90-18. Is there enough front fender clearance to use the 90? I don't think this would cause the front end to be much higher.

Thanks
Chuck
 

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Hi,
I don't have a Speedmaster but I can calculate the outside diameter of tires.
110/80-18 = 24.93inch O.D.
110/90-18 = 25.79inch O.D.

In other words it will be .86" larger O.D. or .43" (7/16") less clearance between tire and fender.

Hope this helps
 

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Discussion Starter · #3 ·
Front Tire

Hi,
I don't have a Speedmaster but I can calculate the outside diameter of tires.
110/80-18 = 24.93inch O.D.
110/90-18 = 25.79inch O.D.

In other words it will be .86" larger O.D. or .43" (7/16") less clearance between tire and fender.

Hope this helps

Thanks I will measure tonight when I get home.

Chuck
 
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