Choosing the Right Tires for Towing with a Kia Sorento SX

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A new RVer asked for advice on selecting rear tires for a 2018 Kia Sorento SX towing a 3,500 lb Nu Camp Tab 400, expressing confusion about load index ratings and whether all tires need to match. The original equipment tires were 101H, but the current set is 105V, which seemed to overheat and show higher PSI increases when towing.<br><br>Experienced members clarified that while it’s not strictly necessary for all tires to be identical, it’s highly recommended for AWD vehicles like the... More...

tighttimes

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Joined
Feb 8, 2026
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Annapolis md
I'm a newbie and am doing research for rear tires for my 2018 Kia Sorrento SX 3.2 Lambda towing a Nu Camp tab 400 (3500lbs) . The tires that the tire shop put on last year were 235/55R19 105V that seemed to get hot last year and exceeded the 6 to 8 PSI range when hot.My research seemed to suggest to put on LT allseason, but Im confused about the load index which the OE was 101H . Whats on now is 105V. Also not sure if I need all my tires to be the same. Any source of info would help
 
... but since it is AWD (all wheel drive) its best if the tires are all the same diameter, and the easiest way to insure that is for them to all be the same make and size. You don't want the front to rear differential to have to constantly compensate for different tire speeds.
 
but since it is AWD (all wheel drive) its best if the tires are all the same diameter, and the easiest way to insure that is for them to all be the same make and size.

I thought she was asking whether the trailer tires had to be the same size as her trailer. My bad!

Tony
 

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