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Old 11-22-2012, 02:03 AM   #21
chasbmw
Beastly Adventurer
 
Joined: Feb 2006
Location: Bath Uk
Oddometer: 1,791
Both my airheads were greatly improved when I fitted a pair of the new Michelin pilot series tyres that are properly sized to be 3.25 and 4.00. Handling was much quicker AND more stable that the original BT45s. This is a good combination, in the wet or dry.

I found that my nominal 4.00 BT45 was in actually 118mm in width, so nearly a 120.

On your bike a 120 should fit with a bit of grunt in fitting it, if it rubs on the swinging arm there used to be a spacer that could be fitted to the hub to move the wheel away from the swinging arm.
__________________
Charles
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R90s 1070 replica, R90/6
1971 Commando Fastback
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