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For the best road handling the tread width of the tire should be approximately the same width of the rim. If you have a 10.5 - 33 - 16 tire, then the combination would work best if the rim was 10.5 inches wide. With a 10.5 inch wide tire and a 7 inch wide rim, the rim tends to "float" between the edges of the tires. This makes your vehicle handle like crap on uneven roads or if crosswinds are blowing. Look at performance tires for the track, if an Mazda RX-7 has an 8 inch wide tire, they will be running 8 inch rims. They will also be running very low profile tires because it helps prevent lateral shift in tire and rim position running in and out of corners. That converts to better handling. Performance wise that is a proven fact. With that tall of a tire used on 7 inch rims, the road manners would be horrible even if aired up to the max rating of the tire. If you go with the 285 - 75 tires, make it handle good and spend money on a set of rims equal to the tire width. You will really appreciate it down the road.
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