I know there's a million tire threads, but does anybody have tire pics of 275/70/18 without lift on factory rims??
Thanks!

 

275/70/18 duratracs on factory xlt chromies and stock height. Maybe an inch or so lift in back from airbags but thats it.

 

 

Pictures are nice but topic size being 1.1" larger diameter than OEM, what (if anything) have you guys done about speedo/odo error? I'm ready to replace stock G-Y SRA's but reluctant to mess-up "dead on" gauge accuracy as measured against Garmin gps vs prox 3.4% difference in revs/mile between those sizes...

 

I do have a 2inch lift. This is on a 2013 Lariat 4x4 off-road package. with no lift you will need some minor trimming.

As for accuracy, I haven't done anything with mine, but calculations only put me about 5 mph faster than speedo at 65. Eventually, I will get a programmer and change that, but for now I have done nothing.

 

I suppose I'm just too ****-retentive to accept that much error. BTW, I've read here that FoMoCo computer can only recalibrate to tire sizes within specific truck's CPU, so unsure how an aftermarket programmer can circumvent that? Also, not anxious to create potential warranty issues on my new truck by "tweaking" programs in any case...

 

I've been running 275/70/18 Goodyear Silent Armors since 2 weeks after I bought the truck new. Myself, I had no problems with clearance at all. Since then, I've put a 2" level kit on, and airbags. I like to keep the factory rake, and am going to put a 3" block in the rear very soon. All that, because I feel a slight lift looks good.
What is your biggest concern with the speedo error? With that small of a difference, I don't worry about a ticket, and never had a LEO ever pay any attention to me. As far as fuel mileage, if you don't rely on the "lieometre", and do it by calculator, just add the 3.38% difference to either the miles, or mpg. I think you'll find the loss of mileage as another zero concern.
Just my experience.

LOL, with my Ranger, and running 32's, I'm 9.46% difference. Now with that much, I do keep it mind, and drive accordingly.

Here's a conversion chart some may be interested in.http://www.agcoauto.com/content/plug...peed/calc.html

 

That's the size I'm running. 630 revs per mile worked out right for my speedometer correction. Since I already have a tuner it was an easy fix.

 

Bottom line for me, I just don't get screwing up dead-nuts gauge accuracy for sake of "appearance" of 1" larger tires (or slightly bigger as might fit). But then I am an olde farte...

 

Ya 275/70/18's will actually correct your speedo for the most part... If anything 1 mph over I know most are 1-2mph under factory