grassracer
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 posted on 24/3/07 at 06:11 PM |
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Tyre Pressures
I've just fitted a set of 15in Street Octanes and 195/50R15 Yoko Paradas to my newly purchased crossflow powered locost...transformed the looks
no end but roughly what tyre pressures should I be running.
I taxed it yesterday and have been for my first ever run this afternoon  everything felt fine but felt maybe that the pressures were a bit high at
26psi, is this about right or is it too high for normal road use ...any suggestions??
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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graememk
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| posted on 24/3/07 at 06:12 PM |
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i think most people run around 14 to 18 psi
i'm running 18 psi in a cec 205 16's
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dilley
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| posted on 24/3/07 at 06:16 PM |
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14.5psi cold, this should give 18psi when warm, set cold and then reset warm to be sure.
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bigrich
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| posted on 24/3/07 at 06:17 PM |
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26 psi is a bit high, i would start in the 16 to 20 psi range
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David Jenkins
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| posted on 24/3/07 at 07:03 PM |
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18psi works for me - 16 was a bit sloppy when driving.
My personal taste, of course! 
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marshall
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| posted on 24/3/07 at 08:30 PM |
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18 psi for me to .
it passed the SVA with tyres
at that psi and i got a good
self centering at 18psi...
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Chippy
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| posted on 24/3/07 at 10:50 PM |
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Yep, 18 all round on mine, but she is a heavy old beast, (900K). Would think maybe 16 all round on an Xflow car. Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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JB
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| posted on 25/3/07 at 07:55 AM |
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To fine tune you need a temp probe. I drove down a long duel carriageway then quickly pulled into a layby and measured the tyre temps. The average of
the outers should match the middle. If the middle is hotter then you are too hard.
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David Jenkins
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| posted on 25/3/07 at 12:15 PM |
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quote:
Originally posted by Chippy
Yep, 18 all round on mine, but she is a heavy old beast, (900K). Would think maybe 16 all round on an Xflow car. Ray
Mine's a x-flow - but I do have high-profile tyres (13" x 185/70) so I think they do need a couple of extra pounds. At 16psi it felt like
I was driving on oil. 
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Chippy
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| posted on 25/3/07 at 11:02 PM |
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quote:
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Originally posted by Chippy
Yep, 18 all round on mine, but she is a heavy old beast, (900K). Would think maybe 16 all round on an Xflow car. Ray
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Mine's a x-flow - but I do have high-profile tyres (13" x 185/70) so I think they do need a couple of extra pounds. At 16psi it felt like
I was driving on oil.
Fine David, mine was just a guess, so you should have the correct pressures, with mine 16PSI whould be like having a puncture
Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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