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Hi there.

I recently bought a set of Goodyear Wrangler AT tyres for my 2001 RAV4 AWD - size 215/70R16.

The guys at the tyre shop pumped them up to an "ideal" 2.2 bar. When I asked them what would be the lowest I could deflate them to for off-road driving, they said I shouldn't go less than 1.8 bar.

My first question is whether that is really the lowest I can/should go when deflating and will that (small) difference have any effect at all on my grip in sand, on gravel etc.? I've heard that guys driving proper 4x4's with larger tyres go down to about 1 or even 0.8 (any less and the tyre may actually come off the rim), but can I not go that low with my tyres as well?

My second question is when should the tyre pressures differ between the front and back tyres? i.e. if I'm full-laden at the back, should the back tyre pressure be considerably higher than the front (and if so, why?) or should they more or less be kept the same?

Any info on the matter would be appreciated, thanks.

Jovan
 

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Hi Jovan. recommended tire pressure is 32 Psi. It depends on how you drive and handle your vehicle. It's best to go with the recommended tire pressure on the tag in the drivers door jamb. There's a maximum tire pressure listed on the side of the tire and you would set it if you have a heavy load or or towing a loaded trailer. anyway, some guys here switch from 215/70R16 to 235/60R16 RAV4 - Tires - 4wheelonline.com


check out this thread
http://www.rav4world.com/forums/86-4-2-general/56519-what-tire-pressure-do-you-use.html
http://www.rav4world.com/forums/97-4-3-exterior/78978-recommended-tyre-psi.html
 
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