Well, I just couldn't live without a rear M/C tire any longer!!!

[hootmon]

I put a 120/90 17 on mine. I can hear a faint rub, but there is no mark on the tire. In fact the injection nipples aren't even being knocked off. I can't believe how much better it handles. Of course, you could just about see the air in the tire I took off. 

How much did the taller tire effect your Speedometer???

[Chad in Michigan]

Just so you know, I voted for "He's Crazy!!!"  LOL

[Charles S Otwell]

I put a 120/90 17 on mine. I can hear a faint rub, but there is no mark on the tire. In fact the injection nipples aren't even being knocked off. I can't believe how much better it handles. Of course, you could just about see the air in the tire I took off. 

How much did the taller tire effect your Speedometer???

I have had the 120-90-17 on my wifes Magna for a good while ( you can see how it fills up the fender in my sig) when we ride we use my Valk to check the actual mileage. We've never rode side by side and checked mph per mph but the last Sunday afternoon run we made to Jefferson we rode a 152 miles by my Valk and the Magna was showing 148, so not much in my opinion.