Big_al_p

Hi

I have a tourer with continental 28 x 1 1/4 x 1 3/4 tyres on. As winter approaches in the UK I'd like to add some better more appropriate tyres.

Can anyone recommend any good ones which would fit and also what would be the max size I could get on those sort of rims?

Many thanks

Al.

fietsbob

Insufficient info .

Explain why do you consider them inappropriate .. the rain wont hydroplane bike tires the contact patch is too small.

the puncture protection bands in many tires reduce the potential for needing to mend a puncture in a downpour.

Andrew R Stewart 

Also the likely max tire width is more an issue of frame/form member and tire side wall clearances then tire/rim fit. 5-7mms of gap between tire and frame is minimal for Winter riding, allowing for crud to build up and also for an out of true wheel. BTW I suggest that you do an actual tire width measurement and not just regurgitate a labeled size. You'll find the tire's real width and not have to guess where within the stated range, 1 1/4 to 1 3/4 (inches?) the tire might be. One measurement is worth a thousand assumptions. Andy.

Bike Gremlin

7 mm space for crud to get out? Just wandering, since I have a commuterized road bike: if I mount fenders so that the first part that the wheel gets in contact with is narrowest, will the fender itself remove crud, like some spoon?

This is what I have in mind:


Can this work with less than 5 mm room? Bottom is like 1-2 mm, while top is max 5 mm.


Like this setup, with slightly more clearance at top of fenders, while rear part will be about like this, 1-2 mm from the tyre:



Can that work for crud, winter (except snow, ofcourse)?

Bill Kapaun

Whats the ISO size?

Andrew R Stewart 

Well as long as there is SOME clearance the wheel will spin without any drag on the fenders or stays. But the reason for good clearance is so when the tire picks up a bit of gravel or some other road crud this piece of crud passes through the fender cleanly. No scrapping or getting stuck within the fender. With the front fender this is a safety concern as a jammed fender will tend to collapse on it's self. In the photo you posted the front fender brace can and will act like a spoon brake and cause the front wheel to stop turning. Resulting in what I call an endo, does your helmet have a face guard?

This is some of the issue with trying to use a bike for a purpose that it wasn't intended for or with parts not intended. Things don't add up but get used anyways. Then when something bad happens we hear of a JRA accident when in fact the decision to create the problem was made many miles ago.

I can only give you my advice and express my concerns. Andy.

Bike Gremlin

Measured now. It is over 5 mm (more like 7) at the narrowest part (bottom), while it tops at just around (or over) 1 cm. Is it wiser to leave the lower part narrower? So it stops crud that can stick at the very start, or should I make it all equall (there is room to move fender further away at the bottom, but not at the top - max 1 cm)?

Andrew R Stewart 

Unless the fender actually grazes the tire, and even then maybe not, the bits and crud will just pass by a close fitting fender end. BITD we used little bent pieces of wire that touched the tread section of the tire, tire savers, and the ides was that they would flick off the bits before they had a chance to dig into the tire (and cause a flat). But often enough all they did was to inform you that something was stuck onto the tire by the thump they made as the bit passed under the wire grazer. A barely grazing fender would likely do no more and would all the time drive me crazy with it's rubbing and noise.

No the correct way to fit a fender is to have just a bit more clearance then the biggest bit of roar gravel/glass you'll likely pick up. Think about the fresh asphalted patches you've ridden over and the pieces that stuck to the tire. Andy.

ThermionicScott 

28"x1-1/4"x1-3/4" (whew) is more widely known as 700x32C. If ice is a possibility, I'd pick up some studded tires in 700x32C or, better yet, 700x35C if you have enough clearance: Studded Bicycle Tires