It can be done, so long as the new rims and tyres are capable of handling the weight, but there'll be some issues which arise from it. For one, your fuel mileage is bound to be reduced, since that truck will be geared for the recommended wheel/tyre size, and you'll be turning higher RPMs to reach the same speeds. Additionally, you'll need to recalibrate your speedometer to account for the smaller tyre size. And the big problem - especially if you're pulling a van or curtainside trailer with normal sized tyres - is that it's going to increase the height at the rear of the trailer.
goodyear
Smaller tires should not cause the check engine light to come on. Smaller tires will cause the speedometer to be off.
Sumitomo
What does tightening your tires mean? You mount a tire and tighten the wheel. The wheel it torqued to whatever the manufacture recommends.
Depends on where you live. There are 18 major tire manufacturers who produce tires for Delta.
Many manufacturers offer a great variety of rims and tires for three reasons: style, performance, sticky tires aren't too good for snow, and to allow people to personalize their cars.
Most major manufacturers of tires offer an 'off road' option. Main manufacturers include Bridgestone, Firestone, Pittbull, Super Swamper and Goodyear.
Many manufacturers suggest every 5000 miles.
Depends on where you live. There are 18 major tire manufacturers who produce tires for Delta.
If you want to buy tires from the very best manufacturers; American tire manufacturers are still the way to go. American tire manufacturers like Goodyear and Cooper Tires still produce and manufacture of some of the highest-rated tires available today. These quality American companies devote large financial resources to research and development to make better and safer tires for American drivers. Furthermore, these companies aggressively price their tires to be competitive with cheaper, lower quality imported tires.
as much as you want or whatever the tire recommends
Toyota recommends 225/70R16 size tires.