Matthewd5

Cool, I always meant to find out what all those codes meant, what would be a good number for an active JK doing a bit of rock climbing on the weekends?

Matthew

B 1000

I think load range was just explained. Load range E is way more than a Jeep needs, but they are extremely durable tires.

The lift in the picture is 3.5 inches. I think that's about as much as I'd go to try to keep things from wearing out faster.

As for your Jeep, you mention that it is your DD with occasional wheeling. What type of wheeling are we talking about? Trails, mud, rocks, sand? If you're looking to do some trails, I would maybe look into a somewhat aggressive all-terrain tire vs. a mud tire. They will last longer, get slightly better MPG, and a little more comfortable.

Thanks for the complement by the way, though my Jeep has changed a bit since these pics

B 1000

Do you mean 315/70R17? If so, yes. BUT you will have to run spacers and lift.

Matthewd5

I wasn't sure if the 315's came in a 75

I have a 3" lift from BDS

Matthew

B 1000

The 315/75 is for a 16" wheel. For the 17" wheel it's 315/70. And for 18" wheel it's 315/65

JK-jeepit

my reason for going with a E load rating.
a E is stiffer and more durable but to me it doesn't ride all that much stiffer on the road as a DD.
I had two side wall punctures two weeks in a row... bad luck I guess.. with the stock tires which are rated C rating (if I recall correctly)
with the E rated tire I air down to 10-12 which seems to be about what a 15-17 was with the stock C rated tires..

they are a heavy tire but so far I like the durability of the E rating and for me it's worth the trade off.

just something to think about...

Matthewd5

Ok

So is it a mathematical formula (even/odd?) or just something you know from past experience?

Matthew

B 1000

Um... technically both. The second number is the percentage ratio size of the first number, which is the width of the tire in a metric number. Please re-read, because that makes little sense even as I'm typing it, haha.

So basically 315 is the width of the tire in millimeters. 70 represents a percentage. So 70% of 315mm is the tire height from the wheel. Now if you change the wheel size, but the tire is still the same width, the % is going to change. 75% for a 16" wheel, 65& for an 18" wheel.

Aaaaaaaand with enough research, you will remember this crap off the top of your head.

Firemedic65

Best explanation by far!

B 1000

Haha thanks! I read over it a few times to see if it makes sense. I'm all for the metric system, but it's so much easier to say 35x12.5 R17