Advice and help with tyre choice

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gandi
Posts: 58
Joined: 29 Jul 2008, 4:56pm

Advice and help with tyre choice

Postby gandi » 21 May 2016, 3:14pm

Hello,
I have suffered with back ache for a long time (years),before giving up totally i tried a 29" hardtail with knobbly tyres and the back ache diminished,but then i found the rolling resistance and noise from the tyres quite harsh,so i opted for a fast road tyre firstly to get more speed and secondly for the road noise.The tyres are the spesh Fatboy's pumped up to maximum (70psi) but annoyingly my back ache has come back.
So are there any fast road tyres out there what i can use and retain the plushness on the rear end as im sure its this single factor that as relieved it.
Your thoughts and experiences please.

Thankyou.

sbcoombs
Posts: 170
Joined: 24 Dec 2015, 8:21pm

Re: Advice and help with tyre choice

Postby sbcoombs » 21 May 2016, 3:29pm

Depends on what terrain you ride. I use Racing Ralph and Rocket Ron for trails. If only riding road I would go for Schwalbe Marathons


I'm a trendy consumer. Just look at my stupid phone.

irc
Posts: 4643
Joined: 3 Dec 2008, 2:22pm
Location: glasgow

Re: Advice and help with tyre choice

Postby irc » 21 May 2016, 11:08pm

70psi is quite high for a big tyre. If it is the 700x45 fatboy I think 70psi is too much. I use 60psi in the rear 700x37 tyre I use and I'm around 17 stone. Unless you are very heavy try 50 -60psi before thinking about tyre changes?

gandi
Posts: 58
Joined: 29 Jul 2008, 4:56pm

Re: Advice and help with tyre choice

Postby gandi » 21 May 2016, 11:21pm

Hello,
Thanks for the replies,you say 60psi in the rear,what do you use in the front ?,is it still 70psi ? and use the suspension in the forks.by the way i am 144 lbs.

Cheers.

OldBloke
Posts: 108
Joined: 15 Jul 2014, 3:34am

Re: Advice and help with tyre choice

Postby OldBloke » 22 May 2016, 6:53am

The old rule of thumb is 15% tyre drop to estimate your tyre pressure. Measure the height of the tyre at the contact point without a load then get on the bike and get someone to measure the tyre height with a full load. Adjust your pressure so you get about 15% drop in tyre height.



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