Question: 20" single wheel options for Kodiak/Topkick C4500/C5500 - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
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Medium Duty Trucks Discuss GM Kodiak/Topkicks, 4500/5500 & up medium duty engine & all associated components.

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Old 02-06-2020, 06:28 PM   #1 (permalink)
trashcanturkey
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20" single wheel options for Kodiak/Topkick C4500/C5500

Thanks for your advice in advance! There are various short posts on this wheel topic over the past decade. The posts usually peter out or are pretty inconclusive. Maybe we can consolidate the info here.

For my 2005 C4500 4x4, I am looking to run some 335/80R20 Continental MPT81 or Pirelli Pista PS22's. Before I buy a set of 1st Attack Engineering steel 20"x11" ($435 each) does anyone have any other options? https://1stattack.com/super-single-wheels-2/

1.) Stazworks new 2 piece aluminum "MRAP" looks pretty good, $550 each. John is nice, but I am not very keen based on some other's experiences. Also quite expensive. See Facebook photos. He does not make single piece welded steel wheels anymore I think.
2.) Eastern Surplus Steel MRAP, $325. Really heavy. https://www.easternsurplus.net/PartD...Hole-Wheel-Rim
3.) Lav/Styrker MRAP. I think Cowpig has had some big issues.
4.) Buckstop steel single. They wont make any for Kodiak/Topkick.
5.) IHC MXT/Shocker alloys. I can't find any.
6.) Hutchinson. Besides the huge cost, do they even make a 8x275mm?
7.) If I don't do singles then, Rimco/A1 wheels has some great Alcoa "knockoffs" for killer deals. https://a1truckwheels.com/product/225368p/ Then a 295/75R22.5 or a 11R22.5 like a Toyo M650 would be great.
8.) Alcoa 22.5"x~14" super single. They don't make that anymore for 8x275mm. Cannot find any used

Does a DOT stamp really matter until I get inspected at a weigh station?

Thank you all, it has been really helpful reading through some posts on here.
Regards, Sam

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Old 02-06-2020, 07:13 PM   #2 (permalink)
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I got the steel ones from Eastern Surplus along with some used 395/85R20 MVTs for my 2008 4500. No complaints what so ever. Heavy? Yes, but hasn't been an issue for me. I'm getting 10.5 MPG with out any tuning mods and only running 30 psi for more traction (snowy winter conditions here).

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Old 02-06-2020, 07:31 PM   #3 (permalink)
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Old 02-08-2020, 09:23 PM   #4 (permalink)
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The Stryker wheels Cowpig had issues with were the aluminum wheels. The steel wheels have no issues that I know of. I have ran them for several years on my 5500.
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Old 02-22-2020, 10:01 PM   #5 (permalink)
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I have the stazworks aluminum wheel with Goodyear G275 335/80r20’s. (41.5”)
Good and bad.
Good
1 I love the wheels.
2 I love the look.
3 I love the lower RPM’s.
Bad
1 I feel like I lost a lot of my toque.
2 My fuel mileage went to s#%t. If i’m guess right because my Speedo is so far off 7-8mpg empty.
3 I don’t like how long it takes for it to shift into 6th gear. Unless I play with the throttle.
4 Most of all I don’t like the fact that the truck is far less stable with the rear singles. My trailer never bumped me side to side before but now it dose because of the wide walls. I started out with 50 psi now I’m up to the max 80 psi��.
5 With my soft ride front springs the truck is very bouncy now.
6 With out spending a lot of money I don’t have a spare.

So all that said.
Looking back on it I’m not a 100% sure what I would have done different, but more than likely I think I would have gone with a smaller tire and dules on the rear and a super single on the front.

Just my thoughts, hope it helps.
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Old 02-22-2020, 10:29 PM   #6 (permalink)
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Old 02-23-2020, 02:16 PM   #7 (permalink)
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Thank you mitch, okdually, bigfkr, and 4x4c4500 for your responses. The steel 2-piece sounds great if you want that.

4x4c4500 thanks for your detailed experience with that Staz combo. Are they balanced okay? Interesting about your fuel economy and towing experience. I wonder if the same size MPT81 would be better for towing. I was set on 22.5's for a while, but couldn't find a tire that was aggressive enough in a size (common, affordable size) smaller than 40", but not too small. 255/70R22.5 just seems like it would ride like **** and the low profile looks bad. 295/75R22.5 or a 11R22.5 in a Toyo M650 would be great and last forever. Alternatively, a 285/70R19.5 Toyo M608z would be nice, but 6x of those and 6x new 7.5" wide wheels (I wish the stock wheels were 7.5") end up costing as much as this 20"+tire option. And they are still only 35". I wish that a 305/70R19.5 was more common and then get some cheap A1 7.5" wheels.

I ordered some 1st attack wheels last week, only downside is lead time is about 8 weeks. Jeff makes it sound like he can easily balance the 335/80R20 MPT81 on his wheels. Also working on a guy for some used MXT wheels (what shocker sold), but it doesn't seem to want to sell them.

Other random posts on this wheel topic:
https://www.dieselplace.com/forum/76...-9-wheels.html
https://www.dieselplace.com/forum/76...singles-5.html
https://www.dieselplace.com/forum/76...version-4.html
https://www.dieselplace.com/forum/76...r-singles.html
https://www.dieselplace.com/forum/76...ls-kodiak.html
https://www.dieselplace.com/forum/76...rements-3.html
https://www.dieselplace.com/forum/76...om-wheels.html
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