Hey guys, I am in need of a new front tire. My buddy has one with 80%+ tread left but its a 120x60x17 and my bike has a 120x70x17. Will that 10mm difference in height cause any problems with handling? Low on funds and can't really afford a new tire at the moment. Thanks
Quote from: BovineFreedom on August 28, 2010, 11:17:09 PM
Hey guys, I am in need of a new front tire. My buddy has one with 80%+ tread left but its a 120x60x17 and my bike has a 120x70x17. Will that 10mm difference in height cause any problems with handling? Low on funds and can't really afford a new tire at the moment. Thanks
The 70 is an aspect ratio not a direct measurement so it'll be a little more than 10mm. the bike will steer a little quicker and generally have a little less contact patch at lean since (assuming they're the same brand/model) the profile will be a little flatter. Essentially, it is nothing that you will really notice for normal street riding. Go for it.
Quote from: jlavallee on August 29, 2010, 07:41:34 AM
The 70 is an aspect ratio not a direct measurement so it'll be a little more than 10mm.
Maybe, maybe not. stamps on tire mean nothing. To know exact difference you need to measure it. I have 60 series tire that is bigger than 70.
Quote from: TWF on August 29, 2010, 03:46:15 PM
Maybe, maybe not. stamps on tire mean nothing. To know exact difference you need to measure it. I have 60 series tire that is bigger than 70.
True, hence my note that it is assuming they're the same brand/model.
Thanks for the info guys. Now to get it installed.
here's a good explanation and breakdown of motorcycle tire sizing.
http://www.retrocycle.com/tiresizes.php (http://www.retrocycle.com/tiresizes.php)
Quote from: BovineFreedom on August 28, 2010, 11:17:09 PM
Hey guys, I am in need of a new front tire. My buddy has one with 80%+ tread left but its a 120x60x17 and my bike has a 120x70x17. Will that 10mm difference in height cause any problems with handling? Low on funds and can't really afford a new tire at the moment. Thanks
Bovine. I understand your concerns. I would just mount it. If your on a race track turning mad skills time. It's something you should worry about. I used to. Now for the street I just mount it.
Races are flipping tires on the race track now. It's unbelievable what people are doing now. A rear is a directional tyre. It's now turning the opposite way and it still works. Fronts I'll even mix and match the brands. I haven't had a problem.. Sometimes the new height rubs my front fender. Haven't broken it yet.
Do what ever you feel comfortable... What I do works for me. Good luck :2cents