Switching L39 TLB turf tires to R4 or possibly AG tires

[ashwood486]

I have another question , if the tire size on a 4wd needs to be compatible front to back, then why on the titan tire website does it list the diameter and rolling circumference as an option.
When I search my tire size I get different numbers from the same tire size on both charts.
Ex. 15-19.5 will have more than 20 options and all of them will have a different diameter, so do I need to be looking at the rolling circumference instead if I want to put larger tires on my L39

 

[KennyV]

do I need to be looking at the rolling circumference instead if I want to put larger tires on my L39

No ... all you Must do is insure that the ratio Front:Rear remains the same as the factory tires. You can go as Large or Small as you wish, Provided that that Ratio remains the same.... it is simple math, and aim for around a 5 percent lead... If you can not figure this check with any competent AG wheel and tire dealer in your area.
The same tire size will be different from one manufacture to another, and the rolling circumference will differ from one design to the next.... that is why you need the rolling circumference of BOTH the front AND the rear tires in order to establish that RATIO...

 

[ashwood486]

That's the info I needed , thank you so much, I really never knew that the tires differed so much with the same number printed on the side. I understand now what goes into changing tire size and its not something you just throw on and go.

 

[mike69440]

15-19.5 tires range from 39 to a bit over 40" in diameter. I do not like it either that they vary so much, should be +/- 1/4" .
Front alxle gears are usually overdriven by about 5% so thats why never be in AWD on hard or paved ground.

16-20 and 10-16.5 would be my chioce.

Do KIoti rims fit?