Text 4966, 67 rader
Skriven 2005-01-12 11:59:48 av Roy Witt (1:10/22)
   Kommentar till text 4922 av mark lewis (1:3634/12)
Ärende: Motorcycles
===================
Hello mark.

12 Jan 05 00:36, you wrote to me:


 MB>>>> Things like tire temperature also make a difference.  Cold
 MB>>>> tires do not respond well for quick stopping and extreme
 MB>>>> cornering.

 ml>>> and i've yet to see anyone mention airpressure, either... tires
 ml>>> with 20 pounds of pressure will (generally) have more surface
 ml>>> contact than

 RW>> Wrong. The tread will cup in the center and all you'll have
 RW>> are the edges of the tread in contact with the road.

 ml> in some cases, yes... not all...

Even on the factory supplied 7.00x15 tires on my 1972 pickup. Wish I could
illustrate it for you in ASCII, but that won't happen.

 RW>> Not to mention irregular wear._
 ml>>> those times with 30 pounds of pressure...
 RW>> That's why tire people and auto manufacturers tell us to keep
 RW>> our tires properly inflated. Doing so gives your tires the
 RW>> best profile required to have the full tread area contact the
 RW>> road.
 ml> true...
 ml>>>  this is, of course, limited by the tire's make up (ie: stiff
 ml>>> sidewalls or soft ones)...
 RW>> Radial ply tires are designed to keep the tread on the ground
 RW>> at all times (the sidewalls roll with the weight transfer).
 RW>> Bias ply tire structures didn't do that very well. Bias ply
 RW>> tires were notorious for stiff sidewalls and riding on the
 RW>> inside or outside of the tread in corners.  Thus, the shorter
 RW>> sidewalls in tires today.

 ml> and then there's those lowprofile tires that you don't want to hit a
 ml> small pothole with for fear of damaging a rim...

Actually, I avoid those even with the 31x10x15s now on my 1972 pickup.
Tall as they are, the sidewalls aren't that strong.

 ml>>> and there's also the compounds used... some make a softer (ie:
 ml>>> stickier) tire than others...
 RW>> Although you can find stickier tires for use on the street,
 RW>> they wear out faster than those normally used.
 ml> true...
 RW>> Where the harder compounds make up the difference is in tread
 RW>> pattern.  My fun Camaro has a set of sticky tires on it and
 RW>> it's a lot of fun to drive through corners. My daily Camaro
 RW>> has the same size tires, but they're made of a harder compound
 RW>> and last a lot longer. It doesn't handle nearly as well as the
 RW>> fun Camaro either.

 ml> i hear that! ;)

Neither of them have very good traction in the rain. Too much rear wheel
engine torque. My oldest Camaro is at our new place in Texas. It has
regular street tires on it and has good traction on wet roads. First day
there, it rained 8" in one day. No problem for that car, except for the
run-off flooding the street crossings. Still moving the rest of the place.



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