Ming the Merciless
There is no mercy
- Location
- Inside my skull
Car tyres are at a lower pressure
Lifespan of Road Tyres
- Thread starter kingrollo
- Start date
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Car tyres are at a lower pressure
Alex321
Veteran
- Location
- South Wales
Yes, they do have more internal pressure, but that helps to maintain the shape, and I believe it is the distortion of shape that causes cracking.
Ming the Merciless
There is no mercy
- Location
- Inside my skull
Glad you’ve changed your mind and now agree that car tyres are at lower pressure.
Alex321
Veteran
- Location
- South Wales
I haven't changed my mind at all. What on earth makes you think I have. I never at any time suggested car tyres were at as high a pressure.
The internal pressure (the pressure the tyres are at) is a very different thing to the pressure exerted on them by the weight of the vehicle.
HLaB
Marie Attoinette Fan
Several times I have had brand new tyres p'ture on their first ride and never p'ture again until the end of their life. When they start p'turing every ride or two for me it's an indication I want to replace them though.
matticus
Guru
That's only true for narrower bike tyres, isn't it? For example, I've just checked for my last car - using online thingy - 29psi front, 26 rear. I've just ridden my 33mm CX tyres at a smidge lower than that. Much wider bike tryres exist, I believe sub-20psi is common?
Not sure how this effects the debate, just thrown in for info! :-)
Ming the Merciless
There is no mercy
- Location
- Inside my skull
I wouldn’t say common, 30 psi is the more common lower limit for mtn bike tyres. Fat bikes being lower and bigger volume of course
matticus
Guru
So that's roughly the same as car tyre pressures?
Ming the Merciless
There is no mercy
- Location
- Inside my skull
Top end of car pressures, bottom end of mtn bike tyre pressures, well below road bike tyre pressures.
Fredo76
Über Member
- Location
- Española, NM
After riding maybe a half-dozen times in about three decades, when I got back into it I put several hundred miles on Specialized Turbo R tires that were that old. This included a dismount and remount after a flat repair of the 30 year old inner tube. They were always on the wheels, and always indoors, and only replaced because I went to 28mm, following the fad. The Turbo Rs had 25mm printed on them, but measured at 21 mm on Mavic MA-40 rims. If skinny tires come back in fashion, I still have them! 
andrew_s
Legendary Member
- Location
- Gloucester
Continental Top Touring 26 x 1.75.
That was the original Top Touring, not the Top Touring 2000 that replaced them in 2000 (ish).
mustang1
Guru
- Location
- London, UK
After riding maybe a half-dozen times in about three decades, when I got back into it I put several hundred miles on Specialized Turbo R tires that were that old. This included a dismount and remount after a flat repair of the 30 year old inner tube. They were always on the wheels, and always indoors, and only replaced because I went to 28mm, following the fad. The Turbo Rs had 25mm printed on them, but measured at 21 mm on Mavic MA-40 rims. If skinny tires come back in fashion, I still have them!
Yeah they will come back in fashion! The YouTube videos will proclaim "Did we have wide tyres wrong all this time?"
cyberknight
As long as I breathe, I attack.
- Location
- Land of confusion
club rider was on a gravel like bike on sunday , he was running 20 psi ! and he still beat everyone
Ming the Merciless
There is no mercy
- Location
- Inside my skull
What width tyres?
cyberknight
As long as I breathe, I attack.
- Location
- Land of confusion
40s I think
