It doesn't appear as though anybody really answered your ?. I'm running 305-70-16's on my 01 Superduty CC. They are made by Toyo. They are E rated.

Scotty, I am running SRW's. The cost was steep, but I went all the way with aluminum wheels, new lugs/covers and axle covers. Plus I couldn't live further from the dealer so the freight was high. Total was about $3,100. But I think it was worth it. Better than buying a new $40k truck.

Graywolf, What is the diameter of the 305's? Do they catch the front bumper when turning and compressing the shocks? I had to put 1 inch spacers on my front bumper because of the 245/70R/19.5 which are 33.2" in diameter and 10.2" wide.

Graywolf, thankyou are you happy with them? And how ply are they? Did you need new wheels or can use stock ones? Scotty.

dmann12, thanks for reply. I agree that 3100 is way better than 40+K for new and still have to rig it up! I just had over $600 work done to the 2000 front end and had a caliper freeze up on way to work tonight. (new cal. that was replaced 3 weeks ago!) called dealer and tells me to bring in morning and will look at. I said get your _ss here with a tow truck and call me in morning! Truck is at the shop now. They sent a friend of my daughter to get it knowing I wouldn't go off on him. I dont drive the truck every day and stuff tends to stick i have been trying to save it for hauling boat +camper but seems that I'm ****** if I do and ****** if I dont. Have a great Christmas! Scotty.

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Originally posted by Dave Pelletier:
Weight ratings are nice, but aren't everything. When given the choice, stick with E's. Their higher air pressure (80psi compared to 65) make a noticeable difference in sway control.

Dave

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Didn't have the choice. The ride is better than the smaller E rated BFG's I had before, course that was on a 3/4 ton Ford and now I have a 1 ton Chevy instead...That might explain it.

Sorry for the delay in the reply. The 305-70-16's are 33" in diameter. I had to add a 1.5" leveling springs to the front end. I am running factory styled mud flaps. They had to be trimmed on the upper inside corner slightly. They will not fit on the factory wheels. I went with 16X8's. These particular tires are rated 3550# at max inflation.Hope this helps.

FxrScotty,

1. To anwser your question "NO", no one makes E rated tires for stock wheels greater than 265's E.

2. If you want to go to a larger tire (greater than 265's), it now requires a wheel change. The important change is the width of the wheel 8" etc. This is so the alinement of the tire on the wheel to get a proper tire bead on the wheel. Failure to do this, could cause the tire to pop off the wheel (blow out).

3. I personnally went with BFG 285's x 16D with new wheels (4 years now, no sway) which will carry most loads and give a softer ride and off road (beach). The other benfit is that 285's x 16 and 235 x 16 have about the same Dia. so no speedometer correction needed. Further This has NO bearing on sway. Sway is controled by the shocks, air bags and sway bar. However, even 285 require a wheel change (width) as recomended by the manufacturer of the tire.

4. Last, when considing a change of this nature. You have to consider the clearence, I am not referring to the height of the tire but the width of the tire. The clearence I'm referring to is the front of the truck when turning the wheels. You may have to bring the bumper out with longer bolts and spacers for clearence (not a big deal).

This message has been edited. Last edited by: Bobster,

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3. I personnally went with BFG 285's x 16D with new wheels (4 years now, no sway) which will carry most loads and give a softer ride and off road (beach). The other benfit is that 285's x 16 and 235 x 16 have about the same Dia. so no speedometer correction needed. Further This has NO bearing on sway. Sway is controled by the shocks, air bags and sway bar. .

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Wrong,

- 1) tire choice DEFINITELY affects sway. A taller tire, one with a softer sidewall, one with less air pressure (or any combination of the three) WILL increase sway. Do yourself a favor and take two identical trucks, one with stock size load range E tires aired up to 80 psi and one with load range D tires aired up to 65psi and give them both a shove sidways on the back end. Note the results.

- 2) There is no such thing as "no sway" all trucks have some sway.

All you have to do to prove my position is to load up your camper and take a short drive with 65psi in the tires and then do the same drive with 80 psi in the tires. I don't make this stuff up, its just physics. Yes, shocks and springs play a part in sway, but the tires do too. Air bags often increase sway by lifting the load off of the overloads or positioning the main spring pack in a softer part of its travel.
I suppose duallies aren't any more stable, either?

Do whatever turns your crank,
Dave

I can assure all of you that going to a 19.5" rim and load range g tires definitely has a lot to do with sway. Although the tire is a bit larger in diameter, the sidewall is shorter, stronger and there is more air pressure.