Some questions to VX owners

[stangri]

PK, Kat, Riff -- thanks again! Donut should be sufficient to me.

So last (hopefully) question about the tires -- I've checked the workshop manual pdf (well, before my pdf viewer crashed) and couldn't find this info there -- what are the Isuzu recommended tire pressure for front/rear and if I go for 285/60/18 tires, the pressure's the same, right?

[deermagnet]

The '99 and '00 manuals say the same thing-



It should be in the door jam as well, like most vehicles. I don't think many of us run with the pressure that low. Mine are at ~34 PSI and I've never seen even the slightest sign of uneven tire wear.

Mark

[VX KAT]

PK, Kat, Riff -- thanks again! Donut should be sufficient to me.

So last (hopefully) question about the tires -- I've checked the workshop manual pdf (well, before my pdf viewer crashed) and couldn't find this info there -- what are the Isuzu recommended tire pressure for front/rear and if I go for 285/60/18 tires, the pressure's the same, right?

The manual/Isuzu will NEVER give any recommendations on air pressure other than OEM.

Depends partly on what specific tire you actually get, have to look and see what it's max tire pressure is, as listed on the sidewall, then go from there.

Both 285/60-18 Cooper Zeon LTZs and Nitto TerraGrapplers have a max of 50 psi listed. Since I regularly drive on rocky/dirt roads, even 44 was just too rough and jarring for my liking, so I choose to run a little lower...front 41, rear 40 psi. Just an FYI, you'll get a bit higher MPG the higher pressure you run (but of course, don't exceed the max recommended).

[tom4bren]

Absolutely agree with KAT. The limiting factor on tire pressure is the tire, not the rim or vehicle. Go with the rating on the tire even if it doesn't agree with what is posted on the door jam or in the manual.

[Riff Raff]

Absolutely agree with KAT. The limiting factor on tire pressure is the tire, not the rim or vehicle. Go with the rating on the tire even if it doesn't agree with what is posted on the door jam or in the manual.

x3. The stock VX from the factory is already a very stiff riding vehicle due to its short wheelbase and true truck suspension (not a car with a fake truck body kit like most crossover SUV's).

Tire pressure is a very personal issue, and varies from person-to-person, based upon many factors such as desired traction, ride comfort, ease of steering, tire wear, and MPG. Personally, I always recommend running aftermarket tires at the max PSI "Per Tire Sidewall Panel" for the very best MPG, ease of steering, load carrying capacity, and reduced tire wear. If a person decides that the max PSI rating is just too stiff and bone-jarring to their liking (or their wifey), then reduce the PSI slightly to a more tolerable comfort level in incremental steps.

Many owner's complain their MPG suffers greatly after installing oversize aftermarket tires. This is primarily due to a combination of increased tire drag (wind resistance, rolling resistance, aggressive tire tread pattern, etc) and increased individual tire weight (the OEM 245/60R18 only weighs 34 lbs each). By choosing a lightweight tire (preferably within 10 lbs of OEM tire weight or a max individual tire weight of 44 lbs each for the VX), and running at the max PSI "Per Tire Sidewall Panel" will offer the very best in tire wear longivity and MPG.