what back spacing do i need

[west chevy hd]

ok i have decided i dont want to lift my truck. i want to get the largest tires i can with just cranking the torsion bar up an inch and a half or so. i also dont want to cut into my bumper. i dont mind triming the air dam. i will do that. i want to use the american eagle series 058's. hears my questions

 

1. what back spacing do i need? and what wheel size do i need?

 

2. im really confused about tire sizes... im trying to learn and im not quite getting it. 285/75/16 is the same hight as 305/70/16??? just an inch wider??? is this the same as a 33X11.5. and will either of them work?

 

3. do i need to lift the rear at all...or can i leave it?

 

 

so what are my options on wheel and tire sizes?

 

any help would be great. thanks

[Roofer]

285/75 is the same height as a 305/70. The 305/70 is about an inch wider. The best combo is a 16x8 wheel and 285/75/16 tires. I think they come as 4.5" backspacing. You don't need to lift the rear. The fronts are the problem because they turn. A 305/70 may fit with alot of trimming. I would stick with a 285/75 tire.

[west chevy hd]

ive been checking and i think the 16X10 series 058 is the only wheel which has the 4.5 back spacing. the 16X8 has a 4 inch back spacing.

[454HO]

that is why i went with the 059's instead of the 058's. the 059 16x8 had the 5" back spacing

[west chevy hd]

so if i go with the series 059's 16x8 and bfg MT 285/75/r16's i will only have to cut a small amount from my air dam. is this correct? i noticed you have 295/75 whats the size diffrence of a 295 and a 285? do you have an side view pics of your truck?

[454HO]

Yes, that was the case with my truck.

personal message me your email address and I will send you some pics.

its hard to post pics on the web site.

 

the 295 is only a tiny bit bigger than the 285. the reason I went with the 295 at the time was the tread bars didnt go as far down the side as the 285. so it actually looked different and better. the 295 looked like the old style.

[chadlyt]

I put on 16x8's with 265 REVO's on mine. I had some rubbing and had to do some trimming on the drivers side wheel well. All i fine now, but i had to remove my mudflaps as they rubbed also...i just have to find some nice mud flaps now...

 

Here is a pic of my truck after getting into some mud.

[west chevy hd]

WHAT KIND OF TRIMMING WOULD I HAVE TO DO TO BE ABLE TO RUN 33X12.5 TIRES.

[454HO]

same size...... 33x12.5 = 295/75 in metric .

[west chevy hd]

ok so if i decide on the 33x12.5x16 mt bfg. then whats the problem with a 16x 10 inch rim...everyone keeps saying only go with the 8 inch rim

[Roofer]

With a 10" rim your problems will be worse with rubbing. You can probably get away with 295's on a stock wheel, but they are still too wide for the rim. The farther the tire is pushed out, as with a 10" wide rim compared to an 8", the more they will rub on the valance, bumper, and fenders. I once had 15x10 rims on my '98 Z71 and 32-11.5-15 tires and they rubbed on every sharp turn and bump. I have heard of people fitting 315/75/16 tires and H2 rims which are 8" wide I think, but it takes alot of trimming and torsion bar cranking. There is just a horrible ride with the torsion bars cranked so far.

Like I said, the best bet is a 16x8 rim and 285's. This will give you the biggest tire/rim combo with minimal trouble with rubbing.

[Roofer]

Also notice 454HO's truck. The 5" backspacing keeps the tire in the fender well. That is how he fits the 295. A 10" wheel will push the tire out way too far to fit a large tire. The less the backspacing the more the wheel is dished and pushed out.

[454HO]

yes sir.......what Roofer said.

 

[rascal]

454HO rims look sweet, was thinking of a spooked rim, but I've always been a fan of bullet holes.

[454HO]

thank you sir.