Another Wheel question thread, MB Old School

[Critter]

I searched quite a bit but couldn't find anything on these wheels so I thought I would ask. MB Wheels which is Discount Tire's house brand makes a wheel called "Old School". They offer a 20x8.5 and two different 20x9.5 (looks like different offsets, one is 0 offset and the other is 15mm). Has anyone used these wheels and if so, which of the 20x9.5 did you use. Obviously pics are always appreciated.

Here is the 8.5"

Here is the 0 Offset 9.5"

And here is the 15mm offset 9.5"

[Critter]

Nobody?
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[Critter]

They also come in a gray finish

[CC69Rat]

Check out this truck ..

http://67-72chevytrucks.com/vboard/s...d.php?t=299232

[Critter]

NICE! Thanks for the link. I like them!

I robbed this pic...

[CC69Rat]

Pretty sure Coys makes them.. not sure. They have a C55 wheel (I think) thats really close. Good luck with them! Post up some pictures if you decide to go that route.
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[Critter]

They are very similar to the C55, I agree. I think I will go with the 20x8.5 on the front and 20x9.5 on the rear with the 15mm offset. From what I have read I don't for see any fitment issues on the 72 stepper in my sig. If someone knows something I don't please let me know!

[CG]

Oh man I must have one foot in the grave if they are calling 20 inch wheels old school

[bobs409]

Originally Posted by CG

Oh man I must have one foot in the grave if they are calling 20 inch wheels old school

Gotta agree and was thinking about the same. How could these be old school? 15" Aluminum slots old school to me!

[CC69Rat]

Critter -- a 20x9.5 on the rear of a stepside might be a little tight (?) do you know which rear end housing you have? the early / late rear ends will differ slightly.

67-68 and most of 69 the rear end housings were 55.5" long if you measure from the back side of one backing plate to the other. It's just an easier point of reference than taking the wheels off to measure.

late 69-some of 70 and then 71-72 rear end housings are 57" long if you measure from this same point. Plate to plate... you're 1.5" different so you might want to measure to be sure if you haven't already. Being a 72, my guess is the late housing.

Usually what happens if the 9.5" wheel with "0" offset compared to the "15" offset wheel would just be a thicker mounting plate. 5mm= about .25" so it will be about .75" difference in offset (if that helps you)

I have the early rear end housing in my stepside. I am running a 20x8.5" wheel with 4.75" backspacing. 255/45/20 tires. It clears, but just barely. I could air it complately down and not rub the fender lip.

I have seen 22x9 with 5" Backspacing and 265/40/22 under a stepper and it is awesome. This truck has the early rear end in it too.

http://67-72chevytrucks.com/vboard/s...d.php?t=414742


What I'm saying is I think the 9.5" wheel might be a little wide for you. There's not a lot of room on a stepside and kinda be careful with the rear end housing if you don't know which one you have. Also, if the truck is lowered you want to make sure you replace your track bar or one side could be a bit tighter than the other. Ex. The rear end could be shifted to one side slightly.

[Critter]

CC69RAT, great info, thanks! I didn't even think about the thicker/thinner flange issue, just assumed the "dish" would be 15mm greater. I do have the original 72 housing, I haven't measured it yet but I'm assuming it is 57" wide like you mentioned. I would make sure to measure before I made a wheeI purchase. So from what I can gather the inner fender area of a step side is the worrisome area, is that correct? I was really hoping to get one of these 9.5s on the truck and drive it as is (sort of a patinad shoptruck look, or in my case, just old and ugly), and in the mean time look for a short wide fleet bed to swap onto the truck. I was really hoping one of the 9.5" wheels would work for both applications but maybe I'm out of luck. Need to keep researching and measuring I guess, I really want a wider wheel out back. By the way I will be dropping the truck some, somewhere between 3/4 and 4/6. I will make the drop accommodate the wheels, as opposed to the other way around.
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[CC69Rat]

Yeah, a wide housing stepper is going to be a challenge on a 4/6. Say you ran 20's .. you'd be around a 20x8.5, possibly 20x9 with 5.5" BS. (the wheel is going to look a bit narrow on the outside. Not a lot of wheel lip to the outside. )

So -- in this example, the 8.5" wheel Where I have the narrow axle housing, I'm running 4.75" backspacing. (check my stepper build thread if you want to see) Because the 72 axle housing is wider, you'd need to offset this difference in the wheel. Ex. .. the wheel sits BACK further under the truck but it takes away the lip you see on the outer edge. So, your combo would be around 5.5" BS.

Some guys run wider wheels on the steppers, but mine, I kinda like a little more tire.. I don't really like for the wheel to be wider than the tire if you know what I'm saying? Kinda hard to describe.

55.5" early housing
57" late housing

.75" wider on either side so say I put my wheels on your truck they'd stick out .75" more on either side. I think you get the idea. Just trying to help .

Coys makes a 20x8.5 with 5.25 BS that would probably work for you, .. but you might have to trim the fender lips a little.

You could also swap to an early rear housing, but that means early 5 lug axles (which are likely going to be aftermarket) Honestly if I were you, if you're planning to swap to a fleet bed, I'd just wait. You would then want a 20x10 with 5.5" BS. 6" BS if you're going really, really low or wider tire.

Hope this helps.

[screaminchevypickup]

No matter which width wheel you choose, either the 8.5 or 9.5 in this brand of wheel.. You will not lose any of you "lip" because they just trim the mounting hub to achieve your desired backspace. The 8.5 will be 1" narrower than the 9.5 though!
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[Critter]

Originally Posted by CC69Rat

So -- in this example, the 8.5" wheel Where I have the narrow axle housing, I'm running 4.75" backspacing. (check my stepper build thread if you want to see) Because the 72 axle housing is wider, you'd need to offset this difference in the wheel. Ex. .. the wheel sits BACK further under the truck but it takes away the lip you see on the outer edge. So, your combo would be around 5.5" BS.

CC69Rat, I appreciate all the details, that's the kinda guy I am, and I follow you so far.

Let me ask it to you this way, from what I can tell you have the narrower axle and an 8.5" wide rim with a 4.75" backspacing on a stepper. So beings I have the wider axle, if all else remained the same as your, would I rub the OUTER fender? That's the way I'm reading this.

Converting offset to backspacing from a place like this tells me that the 9.5" wheels with a 15mm offset is equal to a 5.09" backspacing...which is MORE backspacing than you are currently running. This would pull the inner lip back towards the inner bed by 0.34" effectively cutting in half the 0.75" width difference that my axle has on each side compared to you. If that's the case I would basically be within 1/3" of the inner rim lip being exactly where yours currently is (I'm guessing that wouldn't cause a rub issue). BUT because my 9.5" is wider than your 8.5" I might be out to far and start hitting the OUTER edge of the fender. I'm my math is right I would then be 0.66" closer to the outer fender edge than you currently are.

So to simplify it, if you were to guess, could your current wheels be 0.33" closer to your inner bed side AND 0.66" closer to the outer fender edge without rubbing anything? Sorry for the longwindedness, I just needed to type it all out so I could make sense of it myself.

[bollybib]

Originally Posted by CG

Oh man I must have one foot in the grave if they are calling 20 inch wheels old school

Originally Posted by bobs409

Gotta agree and was thinking about the same. How could these be old school? 15" Aluminum slots old school to me!

I'm with you guys. Old school keeps getting younger all the time.

The ones with the gray finish look pretty good tho.

[CC69Rat]

All over it man. . Perfect.

Unfortunately.. No. With my wheels and 255/45 and 6" drop springs I have maybe .25 to the outer edge... and maybe a hair more than .25 to the inside. Its tight.

Keith is running a 22x9 and 5" BS and had to trim the outer edge a little. I think those wheels would be a bit wide for your stepper. If the tire bead was any wider than the wheel... I just think it would rub. Youre right. On that outer edge. The lower you got, the worse it would be.

Now, on a fleet bed it would be perfect.
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[Critter]

Originally Posted by CC69Rat

All over it man. . Perfect.

Unfortunately.. No. With my wheels and 255/45 and 6" drop springs I have maybe .25 to the outer edge... and maybe a hair more than .25 to the inside. Its tight.

Keith is running a 22x9 and 5" BS and had to trim the outer edge a little. I think those wheels would be a bit wide for your stepper. If the tire bead was any wider than the wheel... I just think it would rub. Youre right. On that outer edge. The lower you got, the worse it would be.

Now, on a fleet bed it would be perfect.
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And therein lies my dilemma. I have owned steppers before but never short fleets. Maybe I should just find a wide bed, get the wheels I want and be done with it. I'm just really stuck on the idea of having a wider rear rim than the front.

On the other hand, I could trim the outer fender edge and only lower the rear 4" and possibly get away with the outer edge fitting. That doesn't do much for the inner flat surface of the bed though beings its straight up and down. I'm thinking mini tubs!
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[CC69Rat]

Just to mention what Kyle said.. the 15 offset and 0 offset would look the same from the outside lip. The difference is the thickness of the mounting surface.
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[Critter]

Yeah that's true, but I think the 15mm would come closer to fitting than the 0. Maybe I'm wrong though.

[68Stepbed]

OK, so the different offsets will look the same from the outside? That kind of defeats the pupose of having a deeper looking wheel.

[CC69Rat]

Billet Specialties look wider. Hint..
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[Critter]

I agree, but have you seen the prices?!?!?

[CC69Rat]

I have a set for sale.. I was just messin with Matt.
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[68Stepbed]

Originally Posted by CC69Rat

Billet Specialties look wider. Hint..
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This is true!

[bugmasta]

Originally Posted by CC69Rat

I have a set for sale.. I was just messin with Matt.
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what size and style you selling?