If all those check out, then you're in the clear. Is there at least 2mm of room on each side (and top) of the tire where it passes through the top of the fork? Same amount of room or more where it passes through the brakes? That's the most likely problem areas here.ĭouble-check the back if you're still worried: is there 2mm clearance around all sides of the tire where it goes through the brake, where it goes between the seatstays, where it goes through the chain stays and where it gets closest to the seat tube? 1.5mm is the thickness of a US penny (or a smidge more than the thickness of a dime), so you can use a couple dimes to measure. If the 7.2 works with a 35mm tire, the 7.3 will almost definitely work with the same 35mm tire on the rear, and very likely work with the same 35mm tire on the front.Ī 35mm wide tire should be 1.5mm wider on each side than a 32mm tire, and will have a similar increased outer radius. All the geometric specs are identical for all sizes between the two models. The wheels are different, but it's a small enough tire size change that it's not a problem. It's hard to be sure from the online description, but probably also the same brakes. The 7.2FX and 7.3FX are the same frame, but a different fork. It's not going to make a huge difference in ride quality and because it's a small change, any bike that comes with 32mm tires is very likely to handle 35mm tires with no difficulties.
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