I have a buddy that just donated a rear tire to the cause. The problem is that it is a Metzler 140/90-15. Stock is 150/90-15, and the discussion 170/80 tires came up.

What effect will putting a 140/90 on the rear of the Vulcan have? The guy who gave it to me said it would probably have a positive effect in cornering.



Thanks,

If you remember from the posts about the 170 tire, it dropped the rpm's (IIRC, about 500 rpm's). So you'll most likely be running higher rpm's with the 140, thus dropping fuel mileage some.

Some VN750 riders put a 140 on to make it quicker off of the line.