Originally Posted by campadk
Just in the process of replacing our current TV to pull a new 07 19ft Bambi. New TV I'm looking at is a used Yukon with 5.3L V8 and set of 20" tires as well as the standard 16" OEM tires.
What difference good/bad will this make on towing the Bambi with the larger 20" tires vs the 16"? Any comments?
well the simple short approach would be stick to the stock size 16 or 17 and an e rated tire.
but i sense you like fiddling, so....
with the 20 inch wheels these are SOME the issues...
-mpg will be less with the 20s
-keeping air pressure right is important.
-20s have LESS air volume, so little drops in pressure are more signiificant.
-are they load rated and do they have the capacity? this info is available.
-what is the outside diameter of tire/wheel combo...
-if the osd is larger than stock...the tv has less functional towing power
-if the osd is equal to stock...tv power is unchanged
-20 inch tires that provide equal osd will have lower profiles/aspect ratio...
-some 20in tires with proper aspect ratio will have adequate load rating...
-some 20in tires with proper aspect ratio will NOT have adequate load rating
-the 20in tires will be louder and transmit more road noise/vibration to the tv
-the 20in tires will need to be rotated more often &/or rebalanced more often
-the complete suspension setup involves tire/wheel issues. some times suspension improves with bigger wheels and other times it doesn't.
-so occasionally shocks need to be changed for big wheels...this is especially an issue towing when weight loads increase at each hub.
-most 20s are heavier than stock so this increases brake distances and negatively affects acceleration.
-the 20in tires will 'appear' to improve handling...but actually what happens is the 'breakaway point' becomes less progressive. so if/when you reach the limits, the signal this is happening is less gradual...this translates to less control at the limits...a higher % of rollovers with large suvs happen on vehicles with wheel/tire mods than stock setups.
-using the 20s for towing into state parks, on gravel, country roads and so on...isn't fun. pot holes, curbs and other irregularities are problematic. it is easier to bend a wheel, cut a tire and so on with the 20s....
-the 20in tires will wear quicker...
-spare tire issues...is you spare gonna be a 20 or 16/17 this matters; especially IF the osd is NOT equal.
-proper torque for lug nuts...the 20s will have different lug nuts AND different torque parameters...gotta know and use properly torqued nuts.
so while 20s look cooler, for towing every issue related to tires requires more thought and more care. really this applies to everyday driving with 20s too...
as a car nut i've got modded wheels for everything and was planning to 'go bigger' on my tv too, but after considering all the issues...stuck with stock.