Continental GP4000 Tyre Circumference

Anyone got the box of one of these tyres? It should say the circumference on the back, need the 23-622 measurement.

Thanks

I have one boxed - on the back it says 2122mm for 23-622.

Cheers bud.

I am clearly a wuss... I am finding it impossible to install these on my stock Charge Plug rims. Can anyone help?

I am clearly a wuss... I am finding it impossible to install these on my stock Charge Plug rims. Can anyone help?
Put gloves on and attack from both sides with tyre levers. You'll need to put a lot of effort in, so the gloves are incase you slip.

Washing up liquid on the rim helps sometimes. Don"t expect miracles though.

Hang them over a radiator to warm them up then give it a go.

thanks guys, is this first hand experience? all I read about these is how hard they are to install. my thumbs are almost blistered from my first efforts!

thanks guys, is this first hand experience? all I read about these is how hard they are to install. my thumbs are almost blistered from my first efforts!
Yes it's first hand experience. Remember the tyres are really strong, you won't be able to break them if you're installing them properly, but they do take a lot of effort to get on. I'd say I pushed hard enough on my tyre levers to move a desk, if that's any help.

Yes it's first hand experience. Remember the tyres are really strong, you won't be able to break them if you're installing them properly, but they do take a lot of effort to get on. I'd say I pushed hard enough on my tyre levers to move a desk, if that's any help.

Thanks ta2, I'll give it another go in the morning.

Lube where ya stuck on. still doesn't work, use a hairdryer to warm up. (after wiping the lube up though!)

Talc powder (if you can be bovvered)

For tricky tyres, I usually get part of the tyre fully seated, stand the wheel up and use my foot to push down onto the tyre. This pushes the tyre beading into the deeper section of the rim, meaning you'll have a little bit more at the opposite end and so it should be a little easier...

I've found brute force to be the key, as well as 2 steel tyre levers, plus 1 hard plastic one.

3 levers and you're home and dry. Sometimes, I wrestle them on with the assistance of as metal spoon.

Yes, I do use GP 4000 tyres.

I blew out one of these on the way home yesterday, purchased Marathon Plus's to replace it and now I have opposite problem. Marathons are so damn huge, they're a bugger to fit as they just drop off. No tyre levers needed, just line them up and start fighting with the bead so that it might stick.

I'll have to get my head around getting these bad boys on tomorrow morning. The OEM Kenda Kwickrollers just slip on and off by hand and really easily. So, heat them, dust with talcum powder, use three tyre levers (and perhaps a metal spoon) and a great deal more elbow grease.

Here's a really bad photo of how far I got with my GP4000s onto my front rims, taken with my blackberry: http://tweetphoto.com/9661720

i had a bit of a sweat on after fitting these tires. I used a kind of 'pinch and roll' technique. You need to as the name suggests, try and pinch as close to the tire bead as possible and then roll it away from you so the bead seats on the rim. There probably is an easier way but i'm not the strongest guy and it was reasonably easy to do it this way.

HTFU! there not that hard. I have always managed with bare hands only. I have found gatorskins to be tougher.

Hmmm, the rim can also be part of the problem- some rims are up at the top spec for size, or their well in the middle is not so deep- usually pushing the bead into the middle of the rim everywhere will free up a little more slack for pushing it over the edge.

Manufacturing tolerances are much easier to control for rims, than for tyres, being that they're made of floppy stretchy temperature dependant stuff- fabric & rubber so if you have a really bad problem, try another tyre.

I can usually get by with just hands on a 700 wheel, but I've also broken enough plastic levers that I have some steel park ones in the workshop, too. Problem is that they mark a rim, as do the plastic ones sometimes. 650 and 26 inch wheels tend to be tighter I find.
YMMV,
Scherrit.