Another New Wheel, with 6" Backspace

[Matt400]

As I continue the 6" backspace wheel research I ran across this one which keeps me coming back to the less expensive KORE wheel that I can't find a 33" tire for, except for a D rated 32. 8" BFG

 

[Spooled-up]

can't find a 33" tire for, except for a D rated 32. 8" BFG

Matt,



These tires are due out this spring:



E load range in a 33 inch tire, and A/T tread too.



Mickey Thompson



The link doesn't take you to the right page. Just click on the Baja Radial ATZ link on the left side of the page.

 

[Matt400]

These tires are due out this spring:

E load range in a 33 inch tire, and A/T tread too.

Just click on the Baja Radial ATZ link on the left side of the page.

But did you see how wide those puppies are? They won't fit the KORE wheel and would take some big flares.

 

[Spooled-up]

I was looking at the 33x13. 5R18's. They're 13. 3" wide at the sidewall and 10. 8" tread width. Do you think that is still too wide? It's only 1. 3" difference from a 12. 5" wide "standard" tire. Just a little over a half an inch on each side wider. Might rub though as the tolerances are pretty tight if you don't get the right wheel. Have you considered the American Eagle 114's? 6" backspacing and 9. 5" wide in 18" diameter.

 

[scootergmc]

Looks like they gave up on the design because all 2005 full size rigs get rear drum brakes now. They added larger front brakes to compensate but according to reports it still added a little stopping distance unloaded. I wonder how good they work loaded?

Is this true? Their website still lists the rotors as standard equipment on anything over the 1500. http://www.chevrolet.com/silverado/specifications/ click on the "braking" tab after the link.



And I haven't stuck my head under any '05 GM truck. I love mine too much.

 

[Matt400]

Hrmm, forgot where I read that- a quick search found this info:

http://www.motor.com/MAGAZINE/Articles/012005_07.html



However its just on the light trucks so probably means the 1500's so I shouldn't have said ALL of their trucks.

 

[gsbrockman]

GM Brakes = Big Joke.

Looks like they gave up on the design because all 2005 full size rigs get rear drum brakes now. They added larger front brakes to compensate but according to reports it still added a little stopping distance unloaded. I wonder how good they work loaded?

GM's 4 wheel disc brakes on their 1500 series trucks & SUV's are a complete joke. I work as a salesperson at an auto repair center and I can't remember how many rear brake jobs, calipers, rotors, and parking brake shoe sets I've sold since their wonderful introduction.

After they failed so miserably with the 4 wheel disc brakes {rears mostly} on the older Luminas, Grand Prixs, and Supremes, one would think they could get it right nowadays, but I guess not.

I've heard it all now..... GM issuing a Mud Flap TSB to cover their arses on crappy brakes ! I love my truck... ... .

Greg

 

[PCline]

Raceline Wheels

I was browsing LesSchwab the other day and they carry this Raceline wheel. It's hubcentric specifically for the dodge. Sorry I couldn't find a better website with specs. It also comes in a black chrome version.



The biggest problem I have with it is price. It's a forged wheel so they're close to $500 each.

 

[Vaughn MacKenzie]

I was looking at the 33x13. 5R18's. They're 13. 3" wide at the sidewall and 10. 8" tread width. Do you think that is still too wide? It's only 1. 3" difference from a 12. 5" wide "standard" tire. Just a little over a half an inch on each side wider. Might rub though as the tolerances are pretty tight if you don't get the right wheel. Have you considered the American Eagle 114's? 6" backspacing and 9. 5" wide in 18" diameter.

Can anyone tell me what 12. 5" and 13. 5" relates to in a metric rating? Can you do a straight conversion to get close (12. 5" = 317mm so that's 315s, 13. 5" = 343 which is 345s). If so the 12. 5" is too big for me, the 13. 5s are huge!!



Vaughn

 

[Spooled-up]

Here's a calculator

http://www.dakota-truck.net/TIRECALC/tirecalc.html

 

[Matt400]

Can you do a straight conversion to get close (12. 5" = 317mm so that's 315s, 13. 5" = 343 which is 345s).

Answered your own question Vaughn, oh and those are widths.

A handy metric over to inches tire conversion can be found here

 

[Matt400]

I was looking at the 33x13. 5R18's. They're 13. 3" wide at the sidewall and 10. 8" tread width. Do you think that is still too wide?

Well now that I look closer at the specs its possible. The KORE wheel is 8. 5" wide and their min rec. rim is 9" so its pretty close. Back in the 15" diameter 1/2 ton days we ran 12. 5's on 8" wheels for better rim protection but the 10" wheel fit the tire better. With 18's the sidewall is so much shorter I see less room for fudging the recommendations to "pull" the sidewall in to a narrow rim.

Have you considered the American Eagle 114's? 6" backspacing and 9. 5" wide in 18" diameter.

No because I don't want flares and the added 1. 5" is all on the outside over the OE wheel.

 

[Matt400]

An interesting way to run the numbers would be to look at it this way:



The Toyo 325/60R18 is 14. 8" wide and carries a min rec. rim of 9. 5"

The MT ATZ 325/60R18 is 13. 3" wide which is 1. 5" less so in theory the MT tire could even fit an 8" wheel. I am reaching aren't I? :{

 

[nickleinonen]

I am reaching aren't I?

yep... but the taller the tire, the narrower the wheel you could put them on... 8" is ok for 12. 5" wheels... for those 325's you should run a 9" wheel [being 1" bigger wheel, and 2" shorter than a 315/70 on a 17x8 - am i making sense?]

 

[Tim]

Looks like they gave up on the design because all 2005 full size rigs get rear drum brakes now. They added larger front brakes to compensate but according to reports it still added a little stopping distance unloaded. I wonder how good they work loaded?

Drum brakes have just as much braking power as discs, if not more. There is only one major flaw with Drum brakes--they don't cool off very quickly.



Have a look at any semi sometime. Most of them have drum brakes on every wheel.



Disc brakes are great for ease of service and because they cool off quickly after a long pull, but drum brakes worked very effectively for a long time, and my old 1 tons with 13 x 3. 5" brakes will lock up their rear brakes, when loaded much easier than the fronts.



That said, I find it laughable that they still haven't solved that rear brake problem. When I was selling auto parts in the stores, they sold like crazy. :-laf



Glad I didn't even look at GM when I bought the Cummins wrapped in a free Dodge.

 

[EEdmondson]

http://www.dakota-truck.net/TIRECALC/tirecalc.html

Great calculators. I determined 275/75R17 would be a perfect size to make my 6th gear taller without pushing extra wide tires... . of course, that size probably doesn't exist in an AT load D or E.

 

[Matt400]

Update-

These are back in the making again:

#ad

 

[WoodChuck]

Have you ever got any info on price and load rating?

 

[Matt400]

No price yet, load is 3200 lb. The gal said she would send me a pic in a couple weeks.

17x8. 5 with 6" back space.

 

[Matt400]

Well its finally here! 17x8. 5 with 6" back space, 199. 00 ea. good find Vaughn