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Hi

I have the same vehicle and asked the same question and got nowhere! If full laden with the 'van fully loaded and using motorway speeds, my local tyre company told me that an increase of "a couple of psi" would be fine, as "those tyres are so darn big!" No other info was forthcoming from various forums and Toyota dealers.

Adrian

Hi

I have the same vehicle and asked the same question and got nowhere! If full laden with the 'van fully loaded and using motorway speeds, my local tyre company told me that an increase of "a couple of psi" would be fine, as "those tyres are so darn big!" No other info was forthcoming from various forums and Toyota dealers.

Adrian

I have a 2005 LC3 and have always ran at 29psi - solo or towing. My previous Colorado was just the same. I have never had any tyre wear problems or stability. Our French trips are 3000+ miles - annual mileage 12000.

Have a look on your drivers door pillar. There should be a TIRE-LOADING INFORMATION stick on label.

This is a copy of my label.

225/70R17 108S front 29 rear 29  LOADED Front 29 rear 38psi

265/65R17 112S front 29 rear 29 LOADED Front 29 rear 29psi

we have toyota surf and normal towing 28psi all round i use to up pressure to 35 as tyres stated to tow twin axle but found steering too light, so after lots of  googling etc, i have left the front ones at 28 and up the back to 30, except i forgot last time and left at 28 all round we have a much better tow now and no light steering, always thought you had to up pressure to max for towing but have learnt alot now and as toyota has big tyres you dont need to go to max.

With both my Landcruisers I have always replaced a tyre with the original Dunlop Grand Trek as they give such a quiet, comfortable ride. I am not into 'mudplugging' and have never had a problem on muddy sites or with the rare occasional snow we get down here in the SW. 

Never had irregular Tyre wear using 29psi pressure.