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285's revisited please help

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OK, OK I know this has been hashed over before but I am still concerned about final drive ratio's with the 285's and 3. 54 gears so can you guys help me make up my mind #ad
as I have new alloys and I need to fill up those wheel wells but I do not want to change axle gears and I pull on occasion a 24 ft. goose neck trailer that will max at about 10,000 lbs. from KS. through the mountains of Colorado and within Colorado. This of course will come after replacing my clutch when found needed replaced when I was getting my rear main seal replaced under warranty so luckily no labor costs involved with the clutch replacement.

Thanks for any and all help,
Paul

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'96 2500 ext. cab, LB, 4x4, 5 speed, 3. 54, TST 280 cam plate, AFC spring kit ,pyro and boost gauges mounted on A-Pillar, tinted windows, 16x8 Eagle alloys
 
Just towed 9000# trailer this weekend with my 285s 3. 54 auto could pull on hills at 55 or 85 did not seem to care. Its kind of hilly west of Desmoines Iowa,I just put the cruise on 1900 rpm,never had to pedal the hills. My speedo reads 5mph slow. 2000 4x4 xcab longbox 3. 54 auto,285 bfg kos,and 275 injectors. Oh and the air is always on,engine temp 200 on long hills. 800 mile trip averaged 14. 8mpg computer said 16. 2 towing. It will just touch 20 empty.
 
Flatlander, I think the difference in overall height between the stock 245's and the 285's you want to run is almost unnoticeable. Probably less than 2 inches. I switched from the stock 215's (30") to a 245/70-19. 5 (33") on my 3500. I feel the truck has lost something in acceleration because of the tire height. It now equates to a 3. 23 gear.

Measure the two tires for actual height. Then input the numbers into the tire/gear ratio calaculator found in the link section of the homepage under information links.

IMHO, run the 285's. Hope this helps.

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98. 5 3500 QC 4x4
Driftwood/ Grey Int.
5 spd, 3. 54
PowerMax2, 19. 5" Alcoas, 245/70-19. 5 Michelins,
Ranchhand bumbers and toolbox, dual 3" with 5" tips, "Scotty Air System", Centerforce Dual Friction clutch, Autometer Gauges, Cobra CB, Sony CD player, Polk Audio Speakers, Upgraded fuel lines from tank to injector pump, Mag-Hytec Diff Cover, PacBrake.

69 Z-28 Camaro, Silver/Black, original motor, 58,000 miles

Building: 32 (Censored) 5 Window, "American Graffiti" replica
 
Flatlander - check out this link. I think this may help you.
http://www.f-body.org/gears/

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99 2500 QC 4X4 5sp / made in Mexico /
3. 54LSD 285 75X16 AR Atlas / Hadley airhorns / DDIII - 4in exhaust, turbo back - HD clutch / ISSPRO guages / 33' Hitchhiker triple slide
 
I also wrestled with this choice. After lots of consideration and playing w/ the numbers, I went with the 285 Bfg a/t's on my stock rims. It worked out perfect w/ the 6 speed & 3. 54 gears. Very happy. This is a nice combo for carrying a camper at just under 9000 lbs. I wouldnt want to go much taller, as it puts more strain on the drivetrain under a load.

The only thing that I really dislike is these tires pick up rocks and fling 'em into orbit as soon as you get back on the road. Rough on the paint and the people behind you. Not much you can do if you want a nice all around tire like they are.

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2000,4x,qc,6sp,3. 54,285/75r16 bfg/at's,Van Aaken cpc, DD Boost Module, Elbow, popup cmpr, 9000 lbs,14. 5-16. 5 mpg, WB6BFD for ID. Whats next, DD1's or 2's?? Now thats a tuffy!
 
My rocker panels look like S#&T!!! b/c of the BFG's. Great tires, but "picks up rocks" is an understatement. Go get yourself some of the Dodge Flat Anti-spray mud flaps. About $20 per set and they seem to prevent this. I wish I had installed them along with the tires.

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1999 2500 QC 4X4 LB Auto 4. 10LS, Driftwood, CD player with Steering Wheel Controls, Power Driver's Seat, 275HP Injectors, Boost Regulator & Elbow, K&N Air Filter, Brushguard, Spray-in Liner, 285/75R16 BFG AT KO's, Nerf Bars, Black Diamond Plate Deep Well Tool Box, Mopar flat antispray guards (front and back)
2000 Yamaha Big Bear 400 4X4
NRA Member
 
BFG could call these sand blasters. Make sure your rear mudflaps are long. Had multimile all terrains on my last truck lots easyer on the rockers.
 
I have a COMMENT and a QUESTION.

COMMENT:
I know I'll hear about this, but I swear on the heads of my dogs, all eight of 'em, I have been running Goodyear Wrangler GS-A 265/75R16's, load rating D, all four at 65 lbs. since new, 12/95, on a '96 4x4 2500. They've been rotated every 6-7000 miles and balanced once. They now have 54,000 miles and look like there's maybe another 8-10,000 left. Tread wear is even all around. True, this truck doesn't ever pull much except a few dogs and me most of the time but it does go off road now and then. The tires are smooth and quiet on the highway, pretty good in the wet, although having barely survived a 75 mph head-on a few years ago on the PA aaargh Turnpike, I don't explore the outer limits of the envelope often. In the snow they remind me of drag slicks on Mazola oil, even in FWD. Overall I'd say I got my money's worth out of these tires. OK, that's the comment, now the segue into the question. Due to sitting out in the New Mexico sun the left front tire has developed a surface crack about an inch out from the rim all the way around. This is all the excuse I need to get NEW TIRES.

COMMENT:
I always figured I would replace the Goodfellas with BFG's when the time came, probably because I get Four Wheeler magazine and BFG is always the first eye-catching double-spread ad in the book. Besides, all the Baja racers win with BFG,s, so they say, and they usually get rave reviews in the tire tests. Although who knows, maybe the tire tester expeditions are sometimes made into memorable events by being obliquely supported in the field by BFG with outrageous quantities of food, drink, plush lodgings, and gorgeous women. I don't know, but it crossed my mind. Then I read somewhere here in the forums that some of you all only got 15 or so thousand miles out of your BFG's,and they throw rocks at your mirror paint jobs, so now I'm rethinking. My second choice would be Michelin LTX A/T's 235/85R16's on stock rims, Load rated E, 32. 0 in. diameter. That's what the ranchers around here run on their trucks, and they've said narrower is better. 9. 7 in. for the 235's vs 10. 9 in. for the 265's. Handle better on the road and go better in the mud and snow, they say. Some of these guys have been at it for a lonnng time, too. Like 50-60 years of riding the ranch roads in their pick-ups, after the horse gave way to the pick-up; mud, snow, gravel, dirt, you name it. And we're talking significant ranches - 50, 100, 200 sections, a section being a square mile for those of you who are city slickers or weren't in the militia. Just reminded myself of a very funny sheep joke, but out of deference to Powerwagon's children, I will restrain myself from publishing it here. #ad


So I'm soliciting opinions based on real world experience with BFG's and Michelins. Bear in mind, Michelin did invent the radial tire, or so they say, which does not necessarily imply that they remain the leader in the field. From the standpoint of my personal experience, we have a '92 Chivvy van with 95,000 miles on it, the last 35,000 of which have been on Michelins that look like they'll easily go another 35,000. But that's a different animal for sure.

So what's the concensus? BFG, Michelin, or?

P. S. I DON'T want Dunlops.

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96 2500 E-Cab, 4x4, 5sp/3. 54, NRA sticker, etc.
 
Michelins are the best tires made (for a reasonable price) IMHO. But the BFG's are good tires if your going to off-road any at all. I've got about 16,000 miles on mine - rotate every 5k, rebalance every 10k - look new as far as tread depth.

My only complaint is that they throw rocks - but any tires with similar tread will do the same. For this reason, I'll try the mud terrains next.

As far as narrow being better, I think it depends on what your running them in - for river bottoms, etc. , you'll bury it up fast. For ground that only has "surface mud", narrow tires will sink down to the hard stuff and go, rather than sitting up in the mud. Just my $0. 02 worth.
 
Thanks for the advice. Gonna get some good flaps!

I have to say that these BFG A/T's have clawed me out of soft sand, slippery boat launch ramps, gravel, and a snow storm in which I had to get out of a pretty steep canyon, after getting snowed in. Was sweating that one a little... But she just clattered her way up and out! Was impressive to see the 2 gullies it trenched out of the snow.

Heres a couple pics taken after we got out and bought some film for the camera... http://home1. gte.net/philr/snow4.jpg http://home1. gte.net/philr/snow5.jpg

Next time Im also thinking of going with the Mud Terrains to get away from the rock problem. Will be 285's of course.


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2000,4x,qc,6sp,3. 54,285/75r16 bfg/at's,Van Aaken cpc, DD Boost Module, Elbow, popup cmpr, 9000 lbs,14. 5-16. 5 mpg, WB6BFD for ID. Whats next, DD1's or 2's?? Now thats a tuffy!

[This message has been edited by Shortshift (edited 06-11-2000). ]
 
Last edited by a moderator:
TXRam/Shortshift-

Thanks for the info. Now for the dumb question. When you say you run 285's, what exactly do you mean? 285/xxR16, or something else??? Or is that your horsepower? #ad


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96 2500 E-Cab, 4x4, 5sp/3. 54, NRA sticker, etc.
 
Yea, really dumb question. When I went back to the thread I noticed your signature - Shortshift - which clearly states your tire size. Oh well, you know what they say, "Read the directions. "
 
Hey no biggie. . They actually fit on the stock steel rims too.

Here's something else to consider (if we haven't confused you enough yet). I have a friend who has had both the BFG A/T's & the Mud Terrains on his truck (99 ram), and he prefers the Muds better! He just hates the road noise. He doesn't have a diesel so I'm thinking that we probably wouldn't care as much since we are already noisy. . I'm with TXRam, BFG Mudders next time.

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2000,4x,qc,6sp,3. 54,285/75r16 bfg/at's,Van Aaken cpc, DD Boost Module, Elbow, popup cmpr, 9000 lbs,14. 5-16. 5 mpg, WB6BFD for ID. Whats next, DD1's or 2's?? Now thats a tuffy!
 
A friend of mine ran BFG Mud terrains on his truck over one winter. They were a little noisier than the AT KO's that I run (and he does now too, btw). But the wear rate was ridiculous! He almost went through the set in one winter. I have 20,000 miles on my BFG AT KO's right now and they have about half of their tread left. His were done at 15,000! They also squirm around and lean a lot more than the AT KO's - but they don't throw rocks.




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-Steve St. Laurent - President of the Great Lakes TDR, Chapter Forums Moderator
'98 Quad Cab Long Bed (CMNSPWR), 4x4, ISB, 5sp, 4. 10 LSD, Prime-loc remote fuel filter, boost & pyro gauges, TST Powermax, muffler eliminator, 5" chrome tip, BD Exhaust Brake, Isspro turbo temp monitor, Permatech spray in liner, Grizzly stainless nerf bars, Stull SS grill & bumper inserts, Front Draw-Tite receiver, BFG 285/75R16 AT KO's
 
Thx for the input.
I've done a little research and find that Michelin apparently doesn't make an LTX/AT in 285. Weird? So that leaves me with BFG's, probably the AT's. How much noise do they make on the highway? That's a major concern. I wouldn't want any annoying harmonics developing between the clatter/purr of the Cummins and whatever sounds - whine? - the tires make. #ad


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96 2500 E-Cab, 4x4, 5sp/3. 54, NRA sticker, etc.
 
I don't think I've ever heard the tires over the motor, wind with the windows down, etc.

On the tread life, I think the tire chain stores give a tread life warranty. Thanks for the heads-up though - definitely something to keep in mind.
 
Question for all of you guys running 285's:

Looks like very few, if any, of the 285's come with a "Load range E" rating. But if you look at the # rating, some of the D's can carry almost as much load as the E's. I hate going DOWN in load range. Is everybody else just putting on "D's" and not worrying about the small difference, or, are you guys finding 285's that carry the "E" rating?

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2001 ETH, QC, LWB, 4WD, 3. 54, SPA Dual Gauge (Pyro & Boost)
 
They're D's - like you said, no E's available in that size (that I could find anyway). But you're right, the weight rating is higher than the weight rating of the truck, so . . .

HC, my brother lives and works in Conway.
 
HC, there are some E rated 285's out there but VERY few and they have street treads (don't remember the manufacturers - sorry). However, the larger the size tire is the higher the weight limit is for a given rating. My stock tires (Goodyear 235/75-16's I think) were E rated at 3042 lbs per tire at 85 psi. My 285/75-16 BFG AT KO's are D rated at 3305 lbs per tire at 65 psi. So they are actually rated to carry almost 300 lbs more than the E's. The difference is that the E rated tires have a stiffer sidewall and more plys in the sidewall. So the truck might lean a little more in the turns (it's also taller now which helps that too), but I haven't had any problems with mine whatsoever. My truck get's better mileage (I have 4. 10's), ride's smoother, and isn't any louder with my BFG's.

-Steve
 
The Goodyears I've been running for the last 50,000+ miles, 265/75R16, are also "D" rated. As I recall they're rated a 3000 lb. each @ 65 lbs, so no problem with load capacity. A fringe benefit of this approach is that 65 lbs sure rides softer than 85 lbs.
Tom
 
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