I bought a 1981 Yamaha xs 850 a couple of days ago and just realized that drive shaft is rubbing against the rear tire although the the tire is correct size. I took it to the local repair shop and they told me it may be solved by using a different rear tire since the size of the tire may change a little from one brand to another. Do you think this works? If not, do you have any other suggestions? Thank you.
2007-05-17 16:20:04 · 5 answers · asked by mu di 1 in Cars & Transportation ➔ Motorcycles
Tire sizes do vary, even when they have the same numbers.
That's one reason bike manufacturers recommend a specific tire size and brand for their bikes. Most important, make sure the shop tells you it's just the tire, and not the bike.
On most of my bikes, and like most people, I have "upsized" my rear tires. In this new age of "wider is better", I find myself looking for narrower tires.
2007-05-17 16:35:29 · answer #1 · answered by Firecracker . 7 · 0⤊ 0⤋
The workshop is correct. Actual tire widths vary a lot from brand to brand for a given size. As an example, a Pirelli SuperCorsa 150/60-17 is 142mm wide, a Bridgestone BT090 in 150/60-17 is 151mm wide. That is a quite a difference. To use a Bridgestone BT090 of the same actual size as the Pirelli, I must use a 140/70.
A lot will also depend on the type of tire, with biased tires, the only kind available for motorcycles in 1981, being generally narrower than modern belted (radial) tires.
bill
http://www.zabernet.de/bill/tuning.html
2007-05-17 17:08:44 · answer #2 · answered by Anonymous · 1⤊ 0⤋
Yes, different tyres do have different profiles and the choice for rubber for old bikes these days is very limited... on 80s bikes, you often have to fit a tyre that the manufacturer would not have thought worthy.
If the rubbing is minor you can live with it, or even cut the tyre slightly to make it fit- bodgy, yes, but as long as it's only a slight cut- well short of the belts- it is okay. Anyone thinking this is totally stupid should bear in mind tyres are DESIGNED to wear out and become thinner.
Use this time to research a tyre that will definitely fit, so you know what you're doing at replacement time.
2007-05-17 17:05:37 · answer #3 · answered by llordlloyd 6 · 2⤊ 1⤋
Insure you are running the correct air pressure. But it sounds to me like you will have to get a different tire.....Sorry.
2007-05-17 16:47:32 · answer #4 · answered by Mustang 2 · 1⤊ 0⤋
Unlikely since the rotors are different diameter. The pads are easy to remove so you can compare them visually.
2016-05-22 02:31:32 · answer #5 · answered by ? 3 · 0⤊ 0⤋