Tire size

Lassenc · Post by **Lassenc** » Thu Jun 15, 2006 9:32 pm

Would I be able to have a 120/90-18 tire on my front, as I do on my rear, without interrupting anything?

Unfortunately I don't have the opportunity to measure

It's an AJS Model 18S

Don Madden · Post by **Don Madden** » Thu Jun 15, 2006 11:40 pm

The distance between my forks with metal spring covers is approximately 5". Between those with gaiters is about 3/4" less, but rubber gaiters vary in size.

Imperial sizes in 1/4" increments, will conform to the nominal size. A 4:00x19 will be 4.00" wide regardless of maker.

Tire widths can vary among different makers & tread designs with the same nominal metric size. I have a Maxxis 120x19 tire that measures 127mm, (5"), across the knobby tread. Other tread designs & makers will vary, sometimes by a considerable amount.

120mm, (5"), is a very big tire for the front & is likely to result in sluggish steering but 4:00x19 were popular on our "Desert Sleds" that run mostly over hot, dry, soft sand & rocks. A little sluggishness can help keep a, (more or less), straight line.

See ya' in the Mojave Desert!

Cheers, Don Madden in Southern California.

Lassenc · Post by **Lassenc** » Fri Jun 16, 2006 12:35 pm

I don't quite get your drift, can it go on or not? :)Edited by - Lassenc on 16 Jun 2006 11:39:24 AM

Lassenc · Post by **Lassenc** » Fri Jun 16, 2006 5:57 pm

I now know that it is 129mm wide, which is 5,1"?

That sucks, I need a narrower whitewall tire, but there doesn't seem to be anyone

Don Madden · Post by **Don Madden** » Fri Jun 16, 2006 6:19 pm

Install a set of Harley-Davidson Wide Glide forks & you can go up to about 6 1/2" wide.

Just Kidding! Cheers, Don.