georgekathe wrote on 12/31/69 at 16:00:03:...but what is difference between a 130/90-15 & a 140/90-15 & how does each effect gearing?
Dunlop is generous enough to list mounted tire sizes:
K555 140/80-15, 3.0" rim, 24.17" tall, 5.87" wide Dia. +0.00%
D404 130/90-15, 3.0" rim, 23.95" tall, 5.15" wide Dia. -0.91%
D404 140/90-15, 3.5" rim, 24.73" tall, 5.85" wide Dia. +2.32
491E2 140/90-15, 3.0" rim, 25.10" tall, 5.70" wide Dia. +3.85%
K 627 140/90-15, 3.5" rim, 25.35" tall, 5.59" wide Dia. +4.88%
As you can see, even from the same manufacturer the same size tires are quite different in size. The same tire on different size rims will change in diameter and width. The rim of the Savage is only 2.75" wide.