Originally Posted by
Long Run Nick
I have a Trek FX 7.3 Hybrid with Bontrager Race Lite-Hard Case 700x32. Bought the bike in May. Have close to 2,500 miles on it. All road riding. I am 5'10" and weigh 145-150. Currently all systems go. Ofcourse the rear tire shows more wear but still looks OK. So far, no flats. When getting new tires should I stay with the same tire? I use the bike to cross train: normally average 14-15 mph. I run 30-50 miles per week. Hey, I am only 67 (in a couple of weeks). Same question on chain. Your input appreciated. Nick
As many as it takes to wear them out.
Measure the chain with a ruler. When pins which used to measure 12" apart get to 12 1/16" replace it. Sometimes that takes 10,000 miles. Sometimes it takes 1000 miles.
When cords show in the rear tire throw it out, move the current front tire to the rear, and install a new front tire. Fast light tires can wear out after 2500 miles in back. Heavy tires might make it 10,000 miles in back and twice that if they never left the front wheel.
If the tire doesn't have a protective layer of some aramid fiber like Kevlar or Vectran and was just relying on thickness to keep sharp things away from the tube you may need to replace it sooner due to an unacceptable flat rate.