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Date:         Tue, 27 Jul 2004 22:03:40 +1200
Reply-To:     Andrew Grebneff <andrew.grebneff@STONEBOW.OTAGO.AC.NZ>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Andrew Grebneff <andrew.grebneff@STONEBOW.OTAGO.AC.NZ>
Subject:      Low-profile performance tires & T3s: specifications
Comments: cc: SVXVanagon <svxvanagon@yahoogroups.com>
Content-type: text/plain; format=flowed; charset=us-ascii

Some Vanagon.com listees have been claiming that low-profile performance tires cannot handle the mass of our vans.

Well, I just bought a set of nice 18" ANZ Scars fitted with 225/35/18 Hankooks.

Here are the hard figures:

wheel static load rating 680kg (1496lb)

tire lstatic oad rating 545kg (1021lb) @ 340kPa (50psi)

A fully-loaded Type 2 grosses at what, 2.5 tonnes/5500lb? Dividing this by 4 gives static 625kg/1375lb per wheel (as we all know, the T3 has a 50:50 front:rear mass-balance).

The wheels are more than capable of holding up. These particular tires will carry a reasonably heavily-loaded bus... and face it, how many of us ever load them up fully? ... and don't forget, these manufacturers' figures will have a fat ass-covering safety margin built-in.

These are far from high-end tires and are made for average cars; similar tires designed for large cars will carry a fully-loaded bus with capacity to spare.

Jeez, but there isn't a lot of meat on those tires to let pressures go down through lack of checking...


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