|
Speed isn't going to cause a mechanical problem unless your trying to drive on a dry paved road and turn at the same time. That's what will cause problems.
There are full time 4wd vehicles out there that you can't take out of 4WD, my jeep for one that has a constant 40/60 split torque and I drive it all the time at speeds up to 75-80mph and I've never had a problem.
4Hi don't have max speed limits other than when shifting into or out of 4Hi.
4Lo on the other hand I believe you aren't supposed to go faster than 35MPH. I don't have my tundra manual with me to check that for sure, but that's what it lists for my Jeep, and it has a lower ratio transfer case than the Tundra, so I would guess maybe 40MPH with the tundra and that would probably be pushing it pretty hard. But I don't know I've never had the need for 4Lo in any of my vehicles, if 4Hi don't get me out then I stay home pretty simple. Same thing with snow chains, if I have to put chains on I stay home. Not worth the trouble.
Does anyone know what kind of mileage you get in 4WD? I think mine dropped about 3-4MPG since I've used the 4WD a couple times on this last fill up. I love the fact that the traction control system still works in 4WD. Anti-lock brakes are also great on this truck, my 88 F-250 only had rear ABS which I found useless, I think front ABS would make more sense especially keeping the front wheels from locking up so you can steer the vehicle.
|