Author Topic: Tyre pressures  (Read 4129 times)

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knightrider

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Tyre pressures
« on: September 08, 2014, 09:37:41 AM »
Just a question which is probably on everyone's mind when pumping up tyres. With all the new Kevlar tyres on the market what pressure do you run. I don't know what everyone thinks but I believe 110psi is way to hard on vee rubber tyres. Kevlar powerblocks are out to 120 psi which is ridiculous. I tend to think 80-90 psi is a good pressure for dry. My son says at full pressure it seem to just bounce all over the track. What are your thoughts.

bert_halts

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Re: Tyre pressures
« Reply #1 on: September 09, 2014, 11:53:57 AM »
I run powerblocks and always just go by what is recommended.  Depends on track surface as well though. Love just pumping up as hard as it says for tracks with bitumen corners.  They just hook in...

Shane

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Re: Tyre pressures
« Reply #2 on: September 10, 2014, 08:46:34 PM »
I also run Tioga PowerBlocks (non foldable version), I run 80psi. I'm heavy and I do most of my riding at home where the corners are tight so it's hard to turn unless I have lots of pressure. Even 80psi can sometimes be quite jarring, it's a fine line though. It took me a while to find the right pressure for me.

GT Interceptor

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Re: Tyre pressures
« Reply #3 on: September 10, 2014, 10:42:26 PM »
1.75 Powerblocks on both bikes

20"- 70psi
24" - 80psi

Big Block

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Re: Tyre pressures
« Reply #4 on: September 11, 2014, 06:50:49 PM »
For me I like to run as hard as possible, am running 1.75 torch at 100psi

stuartpenny50

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Re: Tyre pressures
« Reply #5 on: September 11, 2014, 08:24:26 PM »
I'm 100kg and run 80psi front and 90 rear on 1.95 and 1.75 Maxxis torch.for bitumen corners, a bit less for dirt.

knightrider

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Re: Tyre pressures
« Reply #6 on: September 12, 2014, 09:31:02 AM »
We have since switched back to powerblocks ,1.75 front -1.60 rear. from vee rubber. My son found the vee rubber very loose on the bitumen. Just a little information on the vee rubber, 897 grams for front and rear combined weights on the digital scales compared to 667 grams for the power blocks. If your chasing weight savings steer clear of vee rubber. Also the front 1.75 vee rubber tyre was the same width as the rear 1.60 vee rubber measured with digital vernier calipers. Inflated height was exactly the same. If you cannot do the mathematics on that it means there is no difference in the 2 tyres. The only difference between the vee rubber and powerblocks  is you don't have sore thumbs from putting the buggers on. The first time ever I had to use a tyre lever to get it on the rim and take it off. Powerblocks have got the nod of approval once again.

Jase.harto

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Re: Tyre pressures
« Reply #7 on: September 21, 2014, 02:26:26 PM »
I've found 70psi on power block to be best