I was at my local tire shop today and they were trying to talk me out of the 305 MTR's for my 04 Jeep Rubicon. I am looking at the going to a 33 inch tire. I will be running the stock rim and I am in the process of adding 3 inchs of lift (2 1/2 suspension and 1/2 body) I will be running wheel spacers with the new tires. If I understand it right
285/75R16 = 33 X 11
305/70R16 = 33 X 12
The reasons the shop gave me or not using the 305's were
1) The rim was to narrow
2) The 305 are very hard to get
3) No difference in tire once on the jeep
I have only run the stock factory O4 Mtr's so was looking for advice or input from those who are running this combination.
I have not had problems with my currant MTR's other than not great on hard packed snow or ice.
You are both wrong. 305 is the width, the 70 is a percentage of the width and is the heighth of the sidewall. So take your wheel (16") plus 140% of the width and you get the heighth. Does that make any sense? I'm not good at explaining things.
305/70R16's on Moabs work great.
Not sure what the shop is trying to sell you.
2004 TJ Rubicon - 3" lift, 1" BL, Brown Dog MML with Super brackets, 33's, Warn Winch, VanCo BBK - (Thanks MisfitSeven), IronRock tierod, Ten Factory shafts.
Future upgrades - Too many to list
1999 XJ - DD with 228k
2007 JK Unlimited - The wife's ride.
No, I am not running spacers. I rub a little bit in the front when at full lock, mainly on my control arms, and a little on my upper spring perch. It's mainly on one side because I have the stock front trackbar and it pulls the axle to one side, making it closer. If it was centered, I bet it would barely rub, and I could just add a small washer to the steering stop to keep it from rubbing. Once I add aftermarket control arms, I don't think it'll rub the control arms anymore though.
For the rear, you will have to run an aftermarket trackbar or a the OME trackbar bracket because when I didn't have it on, my tire was about 1/8" away from the upper spring perch on the driver side with the 285s.
If you get the 305s I would definitely run spacers though. The clearance on the upper spring perches and the tires in the rear is still pretty low, so the 305s would be even closer to rubbing, although it worked for a little bit on my 2" lift.
EDIT:I just remembered you have a Rubicon, so your flares will stick out 1.5" further than mine (3" vs 4.5") so even with the wheel spacers on the 285s, you should still be under the flares. The 305s, should only stick out a little bit with the spacers.
When I go home for lunch I'll try to snap a pic of how far out the tires stick from the flare. It may be a little off, since the front is on jackstands right now (I broke my Jeep )
Over the winter I am adding
OME (springs, shocks, steering stabilize)
Rokmen (control arms and 1/2 body lift)
Currie (front steering, front track bar and anti rock)
JKS rear track bar
When everything is off I am putting POR-15 on the underside so it will be a very long high beer consumption project. I can only work on it after the kids go to bed.
So with what you have told me I think I will be good either way. Why did you switch from the 12 to 11 inch tire?
Yeah, you should be fine. For the rear track bar, I would get the Currie one that Savvy sells though. Hell, look into the 3" lift Savvy sells with the Antirock, it will have everything you need, except for shocks. I am running their springs and love them.
The 305s (and wheels) were actually my friends and I was selling them for him. I had them on my Jeep for a little while to decide if I wanted to buy them since I was running 32s at the time. I didn't have the clearance for them with the 2" lift though (wasn't properly bumpstopped for them) and didn't want to mess up my fenders.
The reason I went with the 285s and Moabs now, instead of a 33/12.5/15 (have aftermarket 15" wheels) is because I got the wheels and tires (about 75% tread) for $300 from a friend . Made my decision VERY easy.
Hustler - I think I agree with you as for not wanting to order the harder tire. It hurts me because I think I am just going to order from the tire rack and have the tires mounted when the alignment is done after everything is installed.