Getting new tires and my programmer from doug this week and need some help the tire sizes from yall:

They will be Buckshot Mudders

(1) 285/75-16---->33*11.50
Tire Size LT285/75R16
Service Desc./Ply Rating D/8PR
Sidewall OWL
Tread Depth (in.) 19/32
O.D. (in.) 33.0
S.W. (in.) 11.7
Rim Width (in.) 8.0
Max Load (lbs.) 3305
Max. P.S.I. 65

or

(2) 305/70-16---->33*12.50

Tire Size LT305/70R16
Service Desc./ Ply Rating D/8PR
Sidewall OWL
Tread Depth (in.) 19/32
O.D. (in.) 32.9
S.W. (in.) 12.4
Rim Width (in.) 9.0
Max Load (lbs.) 2910
Max. P.S.I. 50

There is only $10 difference between the two of them

http://i8.ebayimg.com/03/i/02/48/74/0c_1_b.JPG

Tire Size Suggestion for my Next Tires this week??
 

(2) 305/70-16---->33*12.50

Added a poll, i hope i got what your asking correct...

yea, your good, they are both 33s, just one is wider than the other! Thanks man

awesome, no prob ;)

Look what i got for my rear-end today.
 

305's man...ive seen a 285(buckshot maxxis mt) on a 16 x 8, and it looks just too damn skinny...305 would look much better in my opinion...

ps - i finally got a job so in a couple months ill have my bodylift and 33"s...then we need to get a north florida/south georgia meet organized...i know i mentioned this a while ago, but ive gotta mod my truck before i can show it off, ya know?

JIM

I don't think the programmer will be able to recalibrate your speedo, not for 33"s anyway. Let me know if it does.

Doug said it will recalibrate, all he needs to know are the rev/mile the new tire does..But I will let you know when I get it today/tommorow, either or...I have a GPS so I will see if it is off or not..

My question is does he change the limits set in the PCM? You are currently limited to 670rpm for tires as your slowest speed. A 33 is around 642rpm. You can't change the axle ratio to correct it either as you are limited to 4.12 as the maximum ratio.

I have no idea, I will see what this programmer does exactly, and I will call him up and ask him after I test it and ask him about how he actually does all this..

He asked for my new tire size and my axle ratio and that was all he needed he said to fix that problem...I think he changes everything in the PCM to fix the problems all together...