Sep 2, 2002 7:52 AM
|I have noticed that my rear tire has developed a flat wear spot around the entire center tread.The front tire does not have this.I ride Conti Grand Prix and have been very happy with the ride.I've put on about 3000 miles so far this year and I'm wondering what the avg. is for these tires.Is this wear normal for the tires or should I start looking to replace.I am religious on pumping them up to 120 psi before every ride.|
Sep 2, 2002 8:38 AM
|Probably too many variables to narrow an average. I find the miles varies on the GP 3000's. I've had some that last for 2000 miles for the rear tire, and twice that for the front. My last rear Conti GP3000 lasted 800 miles until it developed a worn spot on the tire casing such as you mentioned. Probably depends on which batch the tire came from. If you have 3000 miles on a tire I'd say that is outstanding, wish mine would last that long. My policy on tires is, if I have a doubt, I trash it..|
|sounds like normal wear; pressure maybe a little high?||cory|
Sep 2, 2002 9:19 AM
|That sounds like about the normal amount of wear, and the center touches the ground more often than any other part of the tire, so it will wear fastest. Excessive center wear can be a sign of overinflation, and I don't know the recommended pressure for those tires, but nothing sounds wrong here.|
|re: Tire Wear||GMS|
Sep 2, 2002 10:56 AM
|I had some Hutchinson Reflex tires, and after 250 miles they still had that little rubber flap in the middle of them. It was embarrassing, it was like I hadn't ridden 1 mile on them.
Then, at 300 miles or so, they suddenly developed (both front and rear) a quarter inch band of wear, and I was actually happy about it. It looked like I actually used my tires, and they rode better (less rough).
Then the sidewall got really torn up and I had to throw the rear away... anyway that's enough of that story.
It's odd that it took 3000 miles to develop a worn band.
|re: Tire Wear||eddie m|
Sep 2, 2002 11:31 AM
|I ride my rear tires until the casing shows through the tread, then I put a new tire on the front, and the front on the rear. What you describe is pretty normal, and tires sometimes last a long time after the center of the tread squares up.|
|Here's how tire wear works||Kerry|
Sep 2, 2002 4:29 PM
|Tire wear is almost exclusively caused by power transmission to the road. If you mount a new set of tires, ride 2K miles, then take them off and weigh them, you'll find that the front tire has lost virtually no weight. Depending on the brand/model and your weight, the rear may have lost 10-15% of its weight. At 180 lbs, I get about 2K miles on a Conti GP 3000, Michelin Axial Pro, or Vred Fortezza Tri Comp on the rear. My wife, at 125 lbs. gets at least double the mileage on the same tires. I ride my tires until the rear starts to show casing threads. As another poster noted, best practice is to throw out the rear then move the front to the rear and mount a new front. Best rubber on the front! Just one slightly skidded stop on rough concrete can result in a thin spot on the rear that wears through well before the rest of the tire. Inflation pressure (within a reasonable range) has minimal effect on tire wear. Riding style can increase tire wear - people with a smooth spin will experience longer tire wear (and longer wear on everything else, including their body).|
Sep 2, 2002 6:59 PM
|The continental Grand Prix's are some of the best all around tires out there. The preesure you run is fine for that tire and getting 3000 miles out of the tire is excellent.|
|Might want to try this:||Sintesi|
Sep 3, 2002 6:38 AM
|I put Conti Ultra 2000s on the back and GP 3000s on the front. The 2000s are slightly harder and don't wear as fast but they're just as light as the 3000s. I've noticed no performance drawbacks (cornering accellerating, etc...) and the rear tire lasts very well. They're also $20 cheaper.|| |