Tire makers go cha ching when you need a new set of sneakers.
Also, with the gear ratios of this truck and tire width needed, you need a fairly tall tire but yet want a low profile sidewall for handleing purposes. To get that, the 22's come in handy. Our tires are 31.61" tall as compared to
HEMI with 17's = 31.61" (265x70x17)
You can see the tire height is the same but the rim is 5 inches smaller. If the HEMI tires had a very low profile like our tires do, I bet the diameter would go down to about 25.35" Could you imagine
1. What that would look like on the truck ? eesh
2. increase overall gear ratio by lots and maybe make your vehicle undriveable at highway speed.
In contrast, if we had those HEMI 17s on the SRT-10, handleling would be pitiful but our speedos would work just great
I think it is a combination of a performance requirement (HP vs tire width vs gear ratio vs weight of vehicle) and to a point, asthetics that drives what actual rim size is used as I am sure a 20" could have sufficed and most likely would have been better for the 04's with 4.10s.
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