Originally Posted by
goagain
Thanks! The sensor is attached tightly and very neatly with zip ties, and as long as it's working, I don't want to take it off. I'm not good with such and I'd probably never get it back on securely, and scratch my beautiful new bike in the process.
How much difference would measuring the circumference of the tires likely make to the computer's accuracy? It's a Bontrager computer on a women's Trek bike. Would the computer probably have a fairly accurate number for the bike's original equipment tires (700x35)? I'm just a casual rider and super-accuracy isn't needed. OTOH, I would like numbers reasonably close to what they should be. But usually when I start messin' with stuff that's not broken, I wind up wishing I'd left well-enough alone. Of course, pressing buttons wouldn't scratch my bike.
But would I lose my other saved data if I reset?
That is an easy way to measure the circumference! Great tip-
If you don't care, it doesn't matter
And honestly, I don't know how much difference it makes. I mean, I guess we could do the math if we wanted, but I don't, and it sounds like you don't either. I do know that the recommended number in my manual for my tire size was pretty far from what I actually measured mine to be though, so thought I'd mention it.
You might be fine forever with your minor adjustment, and you might not be. My guess would be that it may shift again, but who knows. You can cross that bridge if/when you come to it.
Oh, to answer your other question, you would have to read the manual to see how to change the tire circumference, but it won't require a reset of your computer, so your data will be fine. You'll want to verify to be certain, but no bike computer should ever be made that way. People change tire sizes all the time and have to adjust that setting.