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question: tire rotation?(9 posts)

question: tire rotation?syart
Feb 13, 2003 4:03 AM
hi, everybody. I run Michelin axial bisport 700x23 (100 psi back, 80 psi front). Up this point, they have been great flatwise, 2500 km. no flats (though I use Mr. tuffy, too). The bike is used for commute, centuries and road racing. I am 42 years old and 170 pounds. I have two concerns:

1. The back tire is wearing out much faster than the front, which looks almost new. At this wearing rate, the one at the back wil be done in a couple of months or so. (doing about 1200 km per month) Should I rotate them?

2. Are the tire pressures (100psi back and 80psi front)ok? or should be increased?

All help and comments are welcomed.

re: question: tire rotation?Spunout
Feb 13, 2003 4:11 AM
Rear tire will wear faster, that is normal.

Now, do you really want to put a worn-out rear tire on the front? All of your important handling/braking/steering goes on up there.

You could replace the rear, or put a new front on and move the old front to the rear. I buy three tires at a time for this purpose, rear always wears 2:1.
Front & Rear tires also wear in different shapes.MB1
Feb 13, 2003 4:22 AM
The rear tire tends to wear down the center and become slightly square if you looked at a cross section. Front tires tend to wear more evenly and maintain their round shape (probably from steering input).

If you put a squared off rear tire on the front it will change your steering for the worse.

You don't want a really worn tire on the front for safety reasons (front flats and blowouts are much more dangerous than rear ones) it will also mess up your steering.

Try it if you like but Spunout has the better way to go.
Agreed, Sheldon Brown has a pagegeeker
Feb 13, 2003 5:07 AM
re: question: tire rotation?cyclopathic
Feb 13, 2003 6:06 AM
the only way I rotate I put new on front, move front to rear and through worn out rear. Agree with comments above you don't wanna put sqare tire upfront.
When buying new tires, buy 3RickC5
Feb 13, 2003 6:22 AM
One for the front, two for the rear, since the rears wear out much faster than the fronts. By the time the second rear is worn out, the front is too, so its time for three more tires. Gotta wait for sales though.

In the past, I've "rotated" the way another poster does, new on the front, move the front to the rear. the only problem I've had with that system is that when moving the front to the rear, I've had problems with sidewall failures (due to dings in the sidewall that get worse when subjected to the additional weight in the rear?). So I stopped doing that.
Yep...put foot on pedal then pedal...then wheels rotate. nmeschelon
Feb 13, 2003 8:09 AM
Front tires age, rear tires wear out.Kerry
Feb 13, 2003 5:14 PM
The wear (loss of weight) of tires is due to power transmission through the rear tire. If you weigh a front tire after many K miles, you'll find very minimal weight loss. However, the tire is aging (crazing, cracking, cuts, etc.) and will wear significantly faster when moved to the rear (60-70% of the mileage of a new tire on the rear) if they've been on the front while the original rear was wearing out. Throw out the worn out rear, move the front to the back, and mount new rubber on the front. Full stop.
Front tires age, rear tires wear out.syart
Feb 14, 2003 4:08 AM
Thank you very much guys for your input. I will do as of all you said,it`s better to play it in the safe side. I will move the front tire to the back and put a new one at the front.