I want to get some wider tires for my bike but can’t found any clearance info on it. Currently there are Schwalbe G-One 40mm mounted, now I’m thinking if I could get away with 50mm wide tires or if I should only get 45mm?
by Tonight-Similar
I want to get some wider tires for my bike but can’t found any clearance info on it. Currently there are Schwalbe G-One 40mm mounted, now I’m thinking if I could get away with 50mm wide tires or if I should only get 45mm?
by Tonight-Similar
11 Comments
50, no way. Even if it clears the frame it will wiggle.
45mm should fit nicely, 47mm would be cutting it close, 50mm will rub the frame. You want about 4-6mm of clearance on either side to account for flex, mud, etc and you have about 55mm of space in total.
How small are the gaps on each side and around the tyre to all frame, fork, and other parts?
Industry spec in ISO-4210, *Safety requirements for bicycles*, is for 6 mm minimum gaps at any point (4 mm for racing (road) bikes, 6 mm for everything else).
It’s not manufacturer specific, though most manufacturers do publish a maximum tyre size in their spec info for each bike which corresponds to this rule.
It looks like you have 55mm or so, if you give the standard 6mm on each side, that’s 43mm. I’d do 45mm. Make sure you measure everywhere else though. It looks like that fender bridge is already fairly close, and the area down through the chain stays is often closer than the seat stays. That tire looks like it’s measuring maybe 36mm though, which might be why it looks like you have so much space with a “40mm”.
clears by a mil, clears by a mile. Until you ride over a small pebble.
I would do it on my personal bike (am currently, maybe 2.5mm clearance per side) but never on customer bike because the rim needs to be kept perfectly true.
45-47 would be better. Check the spacing between the chain stays, it’s often smaller than the seat stays. The drivetrain can get in the way as well. 1x or a gravel crankset should be fine but 2x road cranks can limit the tire width.
I tried a very small clearance tire setup, like 2mm on either side and it rubbed when I pedalled hard. Or when it went out of true. I ended up dimpling the chainstays a few mm and it worked out great. This is a road bike frame that was made for 700c x28 tires and I managed to fit on some 650b x 35 . Made all the difference.
The seatstay is wider than the chain stays. Tire rub is usually down there. Measure with calipers, instead of eyeballing with a ruler. $9 on Amazon.
If you have a front D, that might spoil the fun.
Nope
Your manufacturer may have that information on their site.