Originally Posted by RTChas
I'm new to this Jeep game is the tire's the cause of the overheat or should I look else where?
I cruz at half way point on gauge around town , once I hit Hwy speed for longer then 5min's it get's hot and outside temps are cool say 40-55* on dash reading..
Cooling fan work's fine and I saw steam from rad when new thermostat opened..
Clogged radiator... install a new one and the problem should disappear.
If you go aftermarket, don't be fooled with claims of increased number of rows, etc. It's not the number of rows but the ability to dissipate heat and that means the size diameter of the tubes X number of rows.
You can only get a radiator in there that fits between the radiator support and the fan - including the shroud. Many companies either decrease the diameter of the tubes and increase the number rows or reduce the number of rows and increase the diameter of the tubes.
Most OE's are made with plastic tanks and aluminum tubes and fins... Maybe the JK is different - I haven't looked at mine since it only has 4,000 miles.
You want to spend money? Install a Griffin... but remember the tube diameter X number of rows scenario.
After all my research on aftermarket radiators, I stayed with OE.