What do I need to fit this 35" Tire, Help PRG...

K-MU · 04-04-2005, 11:13 AM

Hi there, Ive had great succes with the Toyo Open Country tires on my other truck, well today at my local Toyo dealer I saw an awsome 17" tire, its a 325x70r17...

The specs are as following

325x70r17
Aproved rim 8.5" to 10"
Weight 76.5lbs.
Overall Diameter 34.9"
Overall width 13"
Revs per mile 596

So now, with a PRG 2.5" level kit, and a 1.5" rear lift would I be able to fit the tires with minimum rubbing? any special offset on a 17"x8.5" rim to help reduce rubbing?

THX in advance

**loufish** · 04-04-2005, 08:36 PM

My 315's rub, and they spec out to 34.5" tall....I ran factory rims to help insure a better fit.

PrerunnerGreg · 04-04-2005, 09:24 PM

My guess is that they will rub at about 1/2 turn, only the on the rear of the fender liner. My 35's rub just a bit. The shape of the fender well is pretty verticle where it will rub, so ALOT of lift is required to get the truck above the center-line of the tire. This may be pushing it a bit, but if you find an alignment shop that is willing to try something NOT on thier books; You can push the rear lower a-arm alignment cam "out" and move the forward cam "in" and this will 1)give you more positve caster , which is better for larger tires, and 2) physically bring the tire forward about 1/2-3/4". Please dont tell me that its "not factory recomended" or whatever, im just suggesting a possibility to run a bigger tire, and, improve handling a bit. I will be experimenting with this next week. ill let you know.

NorCal 4x4 · 04-04-2005, 09:37 PM

Isn't the maximum, the 2" PRG kit for the 4x4 OR? [w/o other modifications].
(I thought the 2 1/2" PRG was only for the 2WD).

PrerunnerGreg · 04-04-2005, 10:17 PM

That is correct swarren. Actually the 4wd is jsut a hair over 2" and the 2wd is now just a hair under 2.5". Unless someone wants to mess with certain parimeters, that is what i recomend.

K-MU · 04-05-2005, 08:00 AM

So I basically need a lift to run this large tire? How about the Good Year MTR 305x70r17? its a 34" tire...

How would my Titan perform with MTR tire in highway and off road?

THX in advance

chopper · 04-05-2005, 08:23 AM

I have 325 open country tires on my truck. They are a lot wider than a standard 35x12.50. Mine rubbed even after the 6" lift so I had to do quite a bit of trimming on the fender well.
Awsome tires though!!

Chopps

neworleansmike · 04-05-2005, 08:24 AM

i fit 35's on stock wheels with a 2" revtek spacer...had to cut the pinch molding behind the fender skirt and push the skirt back for additional clearance. The tires rub a little at full turn. They were rubbing on the frame rail. And before anyone asks no i don't offroad, baja, pull 65,000 lb trailers on any of the likes.

K-MU · 04-05-2005, 10:22 AM

Quote:

Originally Posted by chopper

I have 325 open country tires on my truck. They are a lot wider than a standard 35x12.50. Mine rubbed even after the 6" lift so I had to do quite a bit of trimming on the fender well.
Awsome tires though!!

Chopps

What do you think of the Open Country in 325? how do they perform on highway? what about off road?

chopper · 04-05-2005, 06:12 PM

I have not taken mine off road or even in the snow. The 325's are much more aggressive than the snmaller sizes(largewr tread blocks and larger gaps between them). So I would imagine that they would do fairly well off road.. I have been really happy with them. Mine are a 10 ply tire so they are extremely stiff and they handle awsome, much better than the smaller stock tires on the stock wheels. They are about as aggressinve as you can go without getting any road humm. The only time I can really hear them is when cornering at slower speeds.

Sir Choppy

NorCal 4x4 · 04-06-2005, 01:07 AM

Quote:

Originally Posted by K-MU

So I basically need a lift to run this large tire? How about the Good Year MTR 305x70r17? its a 34" tire...

How would my Titan perform with MTR tire in highway and off road?

THX in advance

Hey K-MU,

As you say, the 305-70R-17 is only about an inch higher than the OR Pkg. 285-70R-17 (33.8" vs. 32.7"). Remember only half an inch additional will be above the axle. The recommended 2" PRG leveling kit on the front of a 4x4 OR Titan seems like it would handle this.

Section width might be a factor but not too bad since this also is split, (12" vs. 11.2" section width, or 0.4" wider on each side of the center). If it rubs, buy a heat gun to soften the wheel well liners and then shape.

Also, as many have said the PRG level kit is high enough, and doesn't make dramatic changes to the ride, gas mileage, etc. I think that I recall you do use your Titan OR, so I think a big lift is a bad idea, unless you go through deep creeks or ponds alot. On most hills you will be happier without a big lift. BTW even stock and 4HI these trucks are killer

So my plan is 2" PRG kit in front, Nismo/Bilstein stock height coil overs, once they are released, [but only if they are compatible with the PRG kit, else go for the Donahoe adjustable coil overs].
Possibly 1" PRG block rear, and Bilstein shocks for the rear, once there are recomendations for each block, and no mod to the Titan required for them. Most likely, I'll keep the stock 285-70R-17 size and go with the upgrade BFGoodrich All-Terrain T/A KO because I would rather have that extra half an inch of clearance, (although the MTR and BFG mudders are available in stock size too). Stock size for me because rubbing or near rubbing tires might be o.k. for street but not in the dirt.

Check out the survey results and reviews of the MTR and BFG mudders too at Tire Rack. Here's a link to some links on another thread:
Click Here for links to mudder reviews

Justintoxicated · 04-06-2005, 12:03 PM

Greg, will these Coil Overs solve the problem with my 2.5 inch lift with a 4x4 OR?

Another Question, since I'm already losing the 1/2 inch of travel do to haveing a 2.5 inch lift in the front would I Be better off with 34's or 35's.

K-MU · 04-06-2005, 03:49 PM

Based on what people have to say I may have to stick with smaller diameter tires, probably the 295x70r17 Nittos would be my best choice for a mixed performance on and off road.

Are 35" inch tires worth upgrading from the 33" in off road performance?(off course we are not talking about extreme rock crawling, or going to 3 foot deep mud holes, which I will NEVER do)...

I do alot of rocky hill climbing and sandy hills @ my ranch, so how can a 6" lift affect or give a negative performance? I tough it would make it better.

THX again.

NorCal 4x4 · 04-06-2005, 08:38 PM

Quote:

Originally Posted by Justintoxicated

Greg, will these Coil Overs solve the problem with my 2.5 inch lift with a 4x4 OR?

Another Question, since I'm already losing the 1/2 inch of travel do to haveing a 2.5 inch lift in the front would I Be better off with 34's or 35's.

Since I brought up the coil overs, I'll but-in here and give you my take on the two brands/types of coil-overs I referred to, based on the explanation Greg gives in another thread, and other thread sources. A link to Greg's post is at the bottom.

First off, by far the most inexpensive solution to lack of travel would be to order the PRG 2" leveling kit, and after it arrives, swap it with the 2 1/2". The sell the 2 1/2" on E-bay as a 2WD Titan leveling kit. But on to the coil-over question.

The Nismo/Bilstein stock height should not change the travel, but just be better than the stock Rancho OR coil overs. I don't think Greg found anything more than what is stated in the link as far as compatibility with his kits. Somewhere around the $400 - $500 range, + the cost of the spacers for leveling. Won't be available for maybe a couple of months out. Since I plan on the PRG 2" leveling kit, these may work for my Titan.

The Donahoe Racing adjustable coil overs would solve the issue since the spacers would be discarded/sold, and you would just adjust them to 2". Somewhere around $1000? They were supposed to be released at the beginning of April.

Anyway, check out Greg's post from another thread:

Coil-Overs explained, in a post by Greg

NorCal 4x4 · 04-06-2005, 10:07 PM

Quote:

Originally Posted by K-MU

Based on what people have to say I may have to stick with smaller diameter tires, probably the 295x70r17 Nittos would be my best choice for a mixed performance on and off road.

Are 35" inch tires worth upgrading from the 33" in off road performance?(off course we are not talking about extreme rock crawling, or going to 3 foot deep mud holes, which I will NEVER do)...

I do alot of rocky hill climbing and sandy hills @ my ranch, so how can a 6" lift affect or give a negative performance? I tough it would make it better.

THX again.

The ~33" tires, (285-70R-17 and 295-70R-17), will do the best w/o investing in a 6" lift. I wouldn't buy a 6" unless I could afford the particular companies very best model.

Now don't get me wrong, I love the way the 6" lifted Titans look. If the high prices of the best lifts, new rims and tire price, fuel economy, and potential additional repair costs wasn't a concern I might go for one.

Some numbers: ~$2,500-$3,000 for the better lifts; maybe $350 each for rims; $1440 for 4) tires, size: 325/60SR20 BFG All Terrains. Price is $359 on special, ($180 more than stock each); $1000 for lift installation and tire mounting; for a total of $6800!

So somewhere between $6000 and $7000 you will get 35" tires on your Titan, and 1" of additional ground clearance, at the lowest point of your axle, probably the pumpkin. For 37" inch tires, (4" greater diameter than stock), would give you 2" of additional ground to axle clearance but would most likely rub, especially off-road. They are $434 each.

But the bottom line is that with a higher center of gravity, the on road handling will suffer. How much, I don't know, but I drive on narrow, curvy, country roads, not freeways, so even a bit worse wouldn't work for me.

Off-road, my concern would be the greater potential for rolling the lifted Titan. You're not suppose to go across the face of a hill, but there are situations where you have to a little, and sometimes the lift will be enough to roll you.

Greg's PRG leveling kit, (2" for 4x4), or the Donahoe adjustable coil-overs, (set for 2"), just seem so much better than any lift to me, even if I could afford $7000 for the one inch of ground to axle clearance.