I've done about 75 commutes of 10 miles each, for which HMRC would allow me £350-ish. I've bought a couple of inner tubes and 2 caps this year, total cost around £35. Which is pretty good.
I have bought a couple of spiked tyres for the winter, and a couple of tyres for my road bike, but I've only done one commute on that so I'm not sure I could count that.
On the other hand, commuting by car takes about 10 minutes, whereas cycling takes about 45 minutes if you include all of the time to change, wash, re-pack my clothes etc. So 75 hours extra home time over the past 6 months would cost me about £250.
I have bought a couple of spiked tyres for the winter, and a couple of tyres for my road bike, but I've only done one commute on that so I'm not sure I could count that.
On the other hand, commuting by car takes about 10 minutes, whereas cycling takes about 45 minutes if you include all of the time to change, wash, re-pack my clothes etc. So 75 hours extra home time over the past 6 months would cost me about £250.