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NO stability on turns with my new rear tire(5 posts)

NO stability on turns with my new rear tireBrian T
Aug 2, 2002 8:41 PM
I put a new rear tire on (it's a 700x20) and on my first ride with it, crash badly after taking a usual tight turn. The rear wheel just came right out from under me, pretty bad. The guy at the LBS said he adjusted the tension in the wheel, and it should be fine. So, I take a week to let the massive road rash heal and go out again today. Well, even when I took the turns conservatively, it felt very unstable in the rear wheel. It wobbled like crazy after I turned into a little crack in the pavement, for god's sake! What's the cause of this? The tire, underinflation, all psychological??
re: NO stability on turns with my new rear tireAkirasho
Aug 3, 2002 4:21 AM
Brian T,

Your description is a bit cryptic... and it's unclear exactly what might be happening (rear wheel sliding out could have been underinflation or braking technique combined with speed and lean angle... rear wobble could be indicative of a loose or broken spoke, problem with wheel balance and/or rider weight).

Are you checking and inflating your tire before each ride?

We abide.

Remain In Light.
Crack in the pavement?Spoke Wrench
Aug 3, 2002 5:01 AM
If you're talking about a crack parallel to your direction of travel, that'll happen. You might have bent the rim too.
700x20 runs at higher pressure; smaller contact patchTig
Aug 3, 2002 7:51 PM
Add it up and your 20 tire will lose contact with the ground over rough spots on the pavement more than a wider, lower pressure tire. I'd advise you to stick with a 23 width and run it below the max rated pressure. I've been running my 23's (rated for 125 psi) at 105# in the rear, and 100# in the front. I'm about 135 pounds, so I could go even lower without pinch flatting. I get fewer flats, a more comfortable ride, and much better traction. The rolling resistance is slightly higher, but I wouldn't notice it as much as the predictable cornering and other improvements.
Just a suggestion - check your skewer. nmLeisure
Aug 3, 2002 11:34 PM