MacB
Lover of things that come in 3's
- Location
- Farnborough, Hampshire
On the hunt for info again, have gleaned a fair amount already but would appreciate clarification:-
Rim sizes and what tyres they'll take - I think I get this, all my rims have a designation 622-XX, where 622 indicates a 700c rim and the XX is the rim width in mm and will correspond to a given range of tyre sizes. My commuter has Mavic A719 rims so 622-19 and, going by Sheldons little table this gives an acceptable tyre range from 28 to 44mm. The Mavic site actually indicates 28 to 47mm, but I'm running 35mm tyres so they should be fine. On the Giant the rim shows 622-14, Sheldons table only shows 13 or 15, but I extrapolated, so reckon on a tyre range of 20 to 32mm. I was running 35mm on it, no ill effect I'm aware of, currently run 28mm but was considering dropping that down a bit. The bike originally came with 32mm, which would seem to be the maximum for those rims.
Tyres - looking at putting thinner, hopefully quicker, tyres on the Giant. This bike is only used for unladen social rides now so feel the M+ 28mm are a bit of overkill. When I did my first social ride it had 35mm tyres and it was noticeable how much faster other bikes freewheeled(though the tyres being a bit big for the rims probably didn't help). This is less so since going with the 28's but I think it could be quicker/easier. For starters I want to get tyres with less, or no, tread, this bike never goes off road and the cornering grip from the M+ isn't great. I was looking at the Schwalbe Ultremo R(HS380), seems to give pretty good puncture protection but far better grip and speed. The weight difference is huge as well, 740g for the M+ and 180g for the Ultremo. I have read up on rolling resistance, comfort and performance in relation to inflation pressures. I'm keeping the bigger tyres and lower pressures for commuting, but want speed over comfort for social and training.
If anyone can verify my understanding of rim and tyre sizing that would be great. Also any feedback on the Ultremo or suggestions of better tyres in that price range(I think they're around the £30-35 each mark).
This is what happens when you get home late from a ride, sleep in, have some beers in the afternoon and then fall asleep on the sofa......bloody wide awake now.
Rim sizes and what tyres they'll take - I think I get this, all my rims have a designation 622-XX, where 622 indicates a 700c rim and the XX is the rim width in mm and will correspond to a given range of tyre sizes. My commuter has Mavic A719 rims so 622-19 and, going by Sheldons little table this gives an acceptable tyre range from 28 to 44mm. The Mavic site actually indicates 28 to 47mm, but I'm running 35mm tyres so they should be fine. On the Giant the rim shows 622-14, Sheldons table only shows 13 or 15, but I extrapolated, so reckon on a tyre range of 20 to 32mm. I was running 35mm on it, no ill effect I'm aware of, currently run 28mm but was considering dropping that down a bit. The bike originally came with 32mm, which would seem to be the maximum for those rims.
Tyres - looking at putting thinner, hopefully quicker, tyres on the Giant. This bike is only used for unladen social rides now so feel the M+ 28mm are a bit of overkill. When I did my first social ride it had 35mm tyres and it was noticeable how much faster other bikes freewheeled(though the tyres being a bit big for the rims probably didn't help). This is less so since going with the 28's but I think it could be quicker/easier. For starters I want to get tyres with less, or no, tread, this bike never goes off road and the cornering grip from the M+ isn't great. I was looking at the Schwalbe Ultremo R(HS380), seems to give pretty good puncture protection but far better grip and speed. The weight difference is huge as well, 740g for the M+ and 180g for the Ultremo. I have read up on rolling resistance, comfort and performance in relation to inflation pressures. I'm keeping the bigger tyres and lower pressures for commuting, but want speed over comfort for social and training.
If anyone can verify my understanding of rim and tyre sizing that would be great. Also any feedback on the Ultremo or suggestions of better tyres in that price range(I think they're around the £30-35 each mark).
This is what happens when you get home late from a ride, sleep in, have some beers in the afternoon and then fall asleep on the sofa......bloody wide awake now.
