Hi guys just wanted to know what pressures you guys run on the highway. I cant remember what size tyres I have and not going out there now haha / Standard 16 inch x 7 steel rims. I got bfg a/t on
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highway tyre pressures ?
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Re: highway tyre pressures ?
Depends on the tyre, I run 32psi in the ProComps, but the standard tyres it came with were usually running at 36-38psi depending on what kind of load I had. If you've got standard size tyres, your best bet is to stick with what it says on the placard, if you're running bigger rubber, you have to experiment to find the best ride/handling/wear compromise.[url=http://www.4wdmonthly.com.au/forum/showthread.php?t=29022]My Prado[/url]
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Re: highway tyre pressures ?
We run 36 psi front and 40 psi rear for BFG A/T on standard mag wheels on road and off road, towing boat or empty. Never a problem and wears even.Michael and Kelly
[SIZE=1]1999 Prado Snowy 3.4L petrol, Ultimate Suspension 50mm lift (2013)[/SIZE][SIZE=1], BFG A/T, bull bar, winch, Twine hot water shower, home made rear drawers, Shippshape car top tent, UHF radio, tablet GPS & Navman GPS (both running OziExplorer)[/SIZE][SIZE=1], Spot 1, solar panel, second battery, inverter, Engel fridge and more[/SIZE]
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Re: highway tyre pressures ?
Was advised when I got my Goodyear Wrangler Silent Armour A/Ts fittied to run them at 40 all round.[b]2000 Prado RV6[/b] ~ TJM Type 15 Steel Bullbar ~ Uniden 400SX-RM & GME4702 Ant ~ Front Tow/Recovery Hooks ~ ARB Recovery Kit ~ ARB CKMP12 Air Compressor ~ DIY Rear Door Trim & Table ~ Extended Diff Breathers ~ Safari Snorkel ~ Wireless Reverse Camera ~ Iron Ox Full Length Roof Rack ~ Looong Wish List ...
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Re: highway tyre pressures ?
I find 38 or 40 is good,
Bob Jane said i should be running 38 in the front and 36 in the Rear.
But it just didn't feel right.99 RV6 Prado manual, 1" lift, ARB Steel winch bar, Ridge Ryder 9500lb winch, Lightforce 170 striker spot light, GME aerial,
Uniden UHF, TJM full roof rack, custom diff breathers, Advanti 16" wheels, 275/70r16 Maxxis Bravo 751, Pioneer head unit,
Milford cargo barrier, Tinted windows,
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Re: highway tyre pressures ?
Daily road use: 36-37
Road use whilst loaded up: 38
Dirt roads: 28-30
Offroading 26-28
Sand: 10-20 depending on how packed the sand is
Tyres are Mickey Thompson MTZ 265/75R16glen_ep - engineered, 4" lift, 33" 255/85R16, lockers, 4.88 ratios www.pradopoint.com.au/showthread.php?17237 www.youtube.com/user/glenep www.fb.com/groups/ToyotaPrado90
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Re: highway tyre pressures ?
To be honest you can run them over a wide range of pressures without any issues. My experience is with the BFG MT & MT2's so your mileage may vary if your tyres sidewalls aren't as stiff &/or the max pressure is less than 65psi.
I use the same pressures front/rear unless I have a trailer on. Add 5 psi for that but not over 50psi.
36psi - 50psi cold
lower pressure gives better comfort but poorer fuel economy
50 was good for the freeway but still some pitching on the concrete sections - 10.4l/100km sitting on 115km/h
40 psi basically means you feel every bump in the road & some secondary roads are worse than many dirt roads, used if going on a trip fully loaded - no trailer
36 psi when empty & being a shopping trolley
Basically there is no one answer, every tyre is different & every driver is too! Not to mention suspension - I'm still running standard after 200,000km....that may be my problem :shock:
CheersRichard
2011 GXL TD Auto Prado Silver
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From the Coopers site.
As a general rule, the following can be used - for road use only: For passenger tyres, inflate your cold tyres to the recommended tyre pressure on your vehicle’s tyre placard*. Then to determine if you have the correct pressure for a given load, note the cold pressure reading. Drive for at least 20-30 minutes to ensure they have reached operating temperature and then check again. Ideally, they should be about 4psi above the cold pressure. If the pressure is more than 4psi above the cold pressure, you should add more air. That is because there is too much friction, which builds up more heat than desirable. Conversely, if they are less than 4psi above cold pressure, the cold pressure is too high.
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Check how much your pressure is going up from cold to running temp, which will tell you how hot your tyres are getting.Heat kills tyres (GeoffJ is spot on)
I always aim for a 10-15% rise in pressure. Fully loaded and towing on the highway that means I am running 52 in the back and about 46 on the front. Around town I run between 38-40. 32 is way too low and effects handling particularly in emergency situations such as sudden braking. Try avoiding an obstacle on a test track with low trye pressure and see what happens.
On heavy corrugations when fully loaded I drop to about 30 on the front and 38 on the rear. I used to not bother changing the pressure but cracked guards were a direct result.
For off-road, I assume you mean 4WD it really depends on what you are doing, rock, sand etc and pressure can vary from 12-35.[B]Steve[/B]
2010 Silver GXL Prado 150, D4D Auto, with a few non standard bits
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