BFG 305/70 A/T KO Tires - Report on Fit & Performance

DRTDuck · 05-16-04, 09:42 PM

B-

you say "dead on if you're running 33" tyres." about Christo's correction gear. On his website it says it only corrects 3.2%, at 60mph, speedo wil read 58.9.

Have folks experienced correction closer than what he states? Curious as I will probably get one soon.

e9999 · 05-16-04, 09:45 PM

why are you guys worrying about a 3% correction, again?
E

Beowulf · 05-16-04, 10:14 PM

Byron,

My corrected speedo is dead on based on my GPS. I know speedos are accurate within a +/- percentage. Before the gear and with 33" tyres, my indicated was 75 and my actual was 80. After the gear my indicated is 75, my actual is 75 (again, this is according to my GPS.)

Tyre sizes by manufacturer and new vs used are also a factor.

-B-

Beowulf · 05-16-04, 10:20 PM

>> why are you guys worrying about a 3% correction, again? <<

The difference was more like 6% for my truck.

The reasons for correcting are:
1. Others drive my truck and I didn't want them doing the mental math to determine their actual speed.
2. If this truck is ever sold (highly unlikely,) I will be able to sign the odometer disclosure statement with a clear consience.
3. I didn't like doing the math on LOF's and other maintenance items.
4. I prefer the adjusted tranny shift points based on accurate vehicle speed.

-B-

ParadiseCruiser · 05-23-04, 08:35 AM

One of the things missing in this thread is a point of reference for height (or lift) of a stock truck. Since not all trucks are exactly alike in this respect, it might be useful for someone considering larger tires to be able to compare their truck to others who are reporting on clearance, rubbing, etc.

So... how about a few of you guys with stock trucks chime in with a few measurements - center of hub to bottom of fender flare, front and back. This would a useful reference for those planning lifts as well.

I'm a long way from stock, so I cannot be the first to contribute, but I would be very interested in seeing a few numbers myself...

Cheers, R -

RavenTai · 05-23-04, 09:05 AM

from center of hub to bottom of fender flare 19.5" both front and rear, 100% stock LX suspension

big worm · 09-13-04, 12:49 AM

Quote:

Originally Posted by Beowulf

Steve,

The larger tyres throw off the speedometer by about 6%. The VSC feeds information to the tranny for optimal shift points. Without the correction gear, your vehicle thinks it's going slower than actual and shifts differently.

-B-

i was reading this, and wondered how bad this is for the truck? does this mean more wear on the transmission? i can live with the odometer being off, but i dont want to hurt the truck.

MoJ · 09-13-04, 05:45 AM

If you're worried about it just order the correction gear. It's SUPER easy to instal. I imagine there's lots of folks running around without the correction gear without any problem. I ran this way for a few months with no problem.

doctorJ · 09-13-04, 01:01 PM

I have bridgestone dueler AT in 285/75 and as far as I know have a stock truck(?) and my hub center to bottom of fender flare is 20" exactly and equal front/rear.
Jay

psj1945 · 12-09-04, 09:38 PM

Just wondering what size tires you could fit with ome 2'' med lift ? Thanks

Beowulf · 12-09-04, 09:41 PM

33's comfortably (285/75R16 or 305/70R16)

-B-

hoser · 12-09-04, 11:32 PM

295/75-16 works for me

Tools R Us · 12-10-04, 08:04 AM

Got to agree on the 295/75-16, but maybe it's a Lexi thing?

MoJ · 12-11-04, 08:46 PM

Pic added at the request of another board member....

rdye · 03-04-05, 02:06 PM

Will a BFG AT KO at 285/75/16 fit in the stock spare location? I have the factory trailer hitch which may or may not limit space.

mtycruiser · 03-04-05, 02:08 PM

Quote:

Originally Posted by rdye

Will a BFG AT KO at 285/75/16 fit in the stock spare location? I have the factory trailer hitch which may or may not limit space.

Yes, it does fit. That's what I have

rdye · 03-04-05, 02:31 PM

I guess I should have stated it is for a stock 93 LC. It looks like there is room for the 285 but nothing larger in diameter.

Thanks

Beowulf · 03-04-05, 02:33 PM

rdye,

You may want to check into the simple mod that raises the spare. It's cheap and you gain over 1" of clearance for the spare when mounted under the truck.

-B-

mtycruiser · 03-04-05, 03:14 PM

Quote:

Originally Posted by rdye

Will a BFG AT KO at 285/75/16 fit in the stock spare location? I have the factory trailer hitch which may or may not limit space.

Yes, it does fit. That's what I have, it's tight but it does fit.

cruiserdan · 03-04-05, 04:28 PM

305/70/16 also fits.....

D-

zcruiser · 07-09-05, 06:29 PM

I know this is an old thread but comes up in searches, so thought I would add a pointer to the pdf on BFG's web site that has all the KO tire sizes, diameters, rim widths, RPMs per mile, etc. Very useful information if you want to check sizes, fitment, and change in speedo/odometer readings...

http://www.bfgoodrichtires.com/asset...rain_ta_kd.pdf

Rusty Phillips · 07-09-05, 08:39 PM

always good to bump a good thread back to the top once in a while

Im curious, what are the weights of a 275/70 vs 285/75 vs 305/70 tire?

I looked, but musthave been in all the wrong places

hoser · 07-10-05, 01:27 AM

I've cut and pasted this from another board. He's comparing 33x12.50/16's which is or close to a 305/70-16. I don't know how accurate the info is.

Quote:

Originally Posted by gothamist

I've also included the weight of the tires, use this as a relative indication of how much the tires will affect your braking and acceleration, apart from the general problems of getting taller gearing w/ new tires. The weight listed is actually for a *33x12.50* tire, as I don't have the info handy for 31's or 32's. Sorry. :(

BFGoodrich AT/KO: a crowd favorite, tough 3-ply sidewall, good in rocks, snow and hardpacked dirt, bad in mud (they clog.) Very expensive in 16" sizes.
Weight: 49 lbs.

Yokohama Geolander A/T: the underdog, not much feedback on them, less aggressive than the BFG's, supposedly better in wet pavement conditions. A good competitor to the Pirelli Scorpions.
Weight: 48 lbs.

BFG M/T: Excellent tires for the many weekend warriors among us. Relatively tough sidewalls (especially for its weight), hard (but not impossible) to clog in mud, and in general an off-road staple, or so it seems. These don't come siped, so expect poor wet pavement traction, and they aren't the greatest in hard-packed snow (i.e. onroad snow.) You'll hear these tires on the highway, but the other cars around you probably won't.
Weight: 51 lbs.

Yokohama Geolander MT: Very cool directional tires. The directional part of these tires is a double-edged sword, IMHO, because it means you have to make a decision of what type of spare to carry (left or right.) These tires get mixed reviews but most of the people I know who actually own them really like them.
Weight: 55 lbs.

Goodyear Wrangler MT/R: This tire seems to be much more aimed at rocks than mud, but is aggressive enough to get lumped in here. Again one of those, gets-mixed-reviews-but-everyone-who-has-them-seems-to-love-them kind of tires. Does not work as well in mud as BFG MT's, is supposed to have better rock/dirt traction though. The main point of contention seems to be sidewall strength--I'm not sure if these tires are 2 ply or 3 ply. Also very expensive and they run rather small for their size.
Weight: 58 lbs.

Super Swamper SSR: Excellent but expensive, these tires wear fast and weigh a lot. Work great in all but the very gooey-est mud, and have a ton of grip in the rocks. Siped from the factory, and like all Swampers, have very very thick sidewalls. When my set wears out, I'll replace them with another set of SSR's (only maybe a little bigger

) These tires run big, so be warned. They're also kind of loud on the highway--other cars can hear your tires as you drive by. :finger:
Weight: 67 lbs.

Grouseman · 07-10-05, 05:54 AM

Ok,

Since were on tires. I was thinking of a Tall skinny tire. 95% of riding is on pavement, the other 5% is easy wheeling. This would give me good ground clearance, and good gas mileage, correct?
I was thinking of a 255/75/16. Thoughts?

Grouseman

Boston Mangler · 07-10-05, 08:10 AM

Hey Guys

Just an FYI, this is a good site to get tire conversion sizes and other info. Its a goodyear site, but the size conversions should be very close:

http://www.goodyeartires.com/goodyea...ea=Light+Truck

hoser · 07-10-05, 10:11 AM

Grouseman, a 255/75-16 would get you a 31" tire which is the stock diameter. A 255/85-16 would get you a 33" tire. There are few tires available in the 255/85 and even fewer in the 255/75. But if you find one you like, just make sure the load capacity is at least equal to the OEM tire and you'll be fine.

Grouseman · 07-10-05, 02:10 PM

Hoser & Mangler,

Thanks for the info. Wouldn't I get better gas mileage on the road with skinny tires?

GM

hoser · 07-10-05, 03:49 PM

Yes, you should get better gas mileage and a quieter ride, all else being equal. But since there are more tires available in the larger sizes, probably better ones, you might not see any advantage. i.e. a crappy 255 tire might not ride as nice or be quiet as a leading 275 tire. Which tires have you found in the 255 size?

My recommendation is to pick a few tires that suits your driving style. Then see what sizes they have available. If fuel mileage is your goal, you might have better luck by optimizing your driving style.

ultimauk · 07-10-05, 05:59 PM

Quote:

Originally Posted by Beowulf

Nope. Most of the monster tyre addicts have the correction gear from Christo. Puts the speedo and odo dead on if you're running 33" tyres.

-B-

Nope. I'm running the Nitto 305's and via GPS I'm speedo wise spot on.

The stock tyres are way under geared.

Grouseman · 07-10-05, 08:19 PM

Hoser,

I bought the Cruiser for hunting trips across the US. Typically I will be on logging roads in pursuit of a great campsite or new hunting opportunities. I have used Michelin LTX M/S for years on my Runner and have great ride comfort, good mileage, and avg. trailing ability. I typically get 60K miles out of them. I am not the hard core 4x4 guys most of you are. I guess I am just too damn cheap to tear up a beautiful Cruiser at this point. So ride comfort, ground clearance, and best gas mileage are all important. The ride of the Cruiser is great now, but I am going to put OME shocks and Springs on it very soon. I will put the firm shocks, springs on, with little lift 1" approx. according to some suppliers. Anymore lift and my wife will not be able to get into the truck, and she will be riding on vacations in it. So I was thinking the LTX tallest skinnest tire that would work.

Grouseman