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Tyre Pressureson a BEC
phil_far - 23/3/11 at 06:24 PM

What tyre pressures are you running on your BEC's?

My car is 453kg and I am currently running on 18ps front adn 20 rears. Weight distribution is 52/48...corner weighted
is it right?

BenB - 23/3/11 at 06:37 PM

Sounds about right but it depends on how the car is handling- tyre pressures can be used to modify the handling to an extent (easier than adjusting suspension).

I run 20 back and front personally cos it's easy to remember and the tyres seem to be wearing nice and evenly

jeffw - 23/3/11 at 06:59 PM

Also depends what tyres you are running. A normal road tyre will need more pressure as they have softer sidewalls but a motorsport tyre (R888, A048R etc) have stiffer sidewalls. On a BEC with R888 I would say 20PSI was on the high side. 17-18 would be a better bet.

steve m - 23/3/11 at 07:07 PM

I was using about 16 psi, and that felt ok

daniel mason - 23/3/11 at 07:32 PM

there was a thread on here a while back with some info from toyo re there r888 tyre. they suggested much more preassure but i always ran 20 front and back!

:{THC}:YosamiteSam - 31/3/11 at 08:58 PM

i run 13psi frnt and rear weighs in about 550 plus me
A048's rear R888 front

try it lower it grips really well

progers - 1/4/11 at 11:09 AM

13 psi is way too low for a 048, especially on a 13" rim. Are you sure you are not compensating for too hard suspension?

Yoko technicians have said that the 048's give their best grip when running at 22psi hot - on my race car I would typically start around 16/17 psi cold. On a standard car on the road you would probably add a little more as you (hopefully) won't be going banzai on the road.

For standard road tyres 18-20psi would be the norm.

Cheers

Paul

Andy3004 - 1/4/11 at 12:45 PM

I run 16psi but that is on soft hilclimb-compound slicks (13 inch) - works for what I need!

:{THC}:YosamiteSam - 1/4/11 at 07:57 PM

quote:
Originally posted by progers
13 psi is way too low for a 048, especially on a 13" rim. Are you sure you are not compensating for too hard suspension?

Yoko technicians have said that the 048's give their best grip when running at 22psi hot - on my race car I would typically start around 16/17 psi cold. On a standard car on the road you would probably add a little more as you (hopefully) won't be going banzai on the road.

For standard road tyres 18-20psi would be the norm.

Cheers

Paul


no - suspension is pretty soft - i have played about with the settings for ages finding what 'feels' nice and between 13 - 15psi cold works great - sticks like brown stuff to woolly sheets! it would also depend a bit on weight - how much does your car weigh in at?