Tyres and Pressure ???

ian.mezz I never said, I could write or spell

3,913 posts · joined Sep 2004 · 12 May 2012, 4:20 pm

#901560

hi
when racing your beetle ,What sort of tyre pressure would you run in your tyres on a cold Wakefield track ????
say road tyres
semi slicks
and slicks

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colin Fahrvergnugen

984 posts · joined Mar 2007 · 12 May 2012, 4:43 pm

#901564

For road tyres Ian try 30psi front and 34psi rear.
For semi slicks try 24psi front and 28psi rear.
Slicks i,m not sure, these pressures are cold and will also depend on driver style and car setup, but thats a start.👍

Cheers Col

sander288 "Bolt-on Master"

1,404 posts · joined Aug 2008 · 15 May 2012, 4:19 pm

#902041

where's fullnoise?

Surely he's got something to add...

I normally run my tyres as per VW;

Formula Vee Tyres (Semi-Slick? - not road legal) : 20 PSI front, 29 PSI rear
And when I ran the Michelin XZX's I ran the same or perhaps around 1.5 psi more or less.

It will depend on the car and it's set-up as I can't speak for a BJ/IRS car, but have a play,

Cheers

Shaun

BMW R65 LS
1967 1300 Deluxe
Swing-axles FTW ❗

Sides Veteran Volks Folk

2,220 posts · joined May 2007 · 15 May 2012, 6:07 pm

#902067

On semi's I usually aim for 30-31 psi all round HOT... COLD pressures are just too difficult to be consistent with I've found.

But yeah - they're just a starting point and am usually checking and experimenting with pressures right throughout the day.

Sounds weird, but it's amazing how much just a 1psi change can affect both feel and times.

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BiX Veteran Volks Folk

2,499 posts · joined Sep 2002 · 15 May 2012, 7:44 pm

#902097

it even depends on the brand, model, tire size and wheel size. Plus the car setup.

Side's idea is a good start. measure them hot and then play with them. But around 26 to 34 for semi's is a good starting point.

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hypo-vw Australias 1st 10sec street beetle (Jan 2007) 10.49secs@132m

2,151 posts · joined May 2004 · 19 May 2012, 2:51 pm

#902819

on full slicks with my dark blue sports sedan , I would normally run 12psi front and 15psi rear . These tyre pressures are set with the tyre warm knowing the cold track conditions at Wakefield . If the day warms up I do adjust the tyre pressure to gain better grip

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