I guess we're down to what's available in a 3.25-19 and 4.00-18 as of April 2025. I can't find a set other than the BT-46s. Â
I just mounted a set of Michelin Road Classics on my '81 R100RT. 3.25B19 out front and a 4.00B18 in back. I put new Michelin inner tubes in too.
Lots of tire brands make those older "inch" size tires.... the problem is that very few of the tire sellers actually have customers asking for them. I mean really... when was the last time you saw ANY vehicle made in 1980 out driving around ? Certainly nothing made in Japan. Possibly England. BMW Airheads are about the biggest customers, and even they are getting scarce.Â
Owning an old Airhead is easy.
Keeping an old Airhead running great is the true test.
Avon Road Riders are available in those inch sizes.
I just got a Shinko rear for my R65 but I can't get you the model and size before my weekend. Equivalent sizing.
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