Originally Posted by cyccommute

Lots of 'reasonable' people I know have multiple bikes. Maybe not 7 but more than one.

Let's talk actual rides not just distance. 10,000 km at 30 to 40 km per day is 330 to 250 rides. I commute, on average, 50% of the work year by bicycle and travel 33 km (20 miles) per day. There are 260 work days in a year so at 130 rides 10,000 km would work out to 2.3 years of use and, since I use 4 bikes most of the time in fairly regular proportions, you can multiply that by 4. So that is, at the minimum, 9 years of use out of a set of wheels for me. I'm not terribly concerned about my 'expensive' wheels with rim brakes.

My current set of wheels on my main road commuter bike have around 11,000 miles on them and aren't showing any signs of needing replacement and my wheels on my main mountain bike commuter...those are the Mavic XC717... have around 9000 miles on them and aren't showing significant brake track wear either. I expect both to last me at least double the current mileage.