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06-07-2004, 07:25 PM | #1 |
Four Wheeler
Join Date: Jul 2002
Location: Decatur, IL
Posts: 101
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15" wheel fitment on 3/4 ton?
Fair warning - this may be a silly question!
My '84 K20 has what appears to be 16x7 (doesn't look like 8") wheels... 8 lug. Here's the thing. I would almost rather have 15x10 wheels instead - as tires (which I've yet to buy, but want 35x12.50s) seem to be easier to find and cheaper for the 15s. Are there any issues with running a 15" on a 3/4 truck? Anything that needs to be done to slip 'em on? I remember hearing something that's a PITA, but not sure what.... Darn old age! (whew, almost 26!)
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'84 K20 4x4 350 V8 - Weiand intake - Headers - 4" Tuff Country lift - 35x12.50 ProComp M/Ts on 15x10s |
06-07-2004, 09:36 PM | #2 |
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Location: Elkhart, IN
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grind the calipers a little, it wont effect the performance of the brakes, just makes them clear the wheels. im going to have to do the same to my Dana 60, which has bigger brakes yet. took my buddy 4 hours to do one side of his 60, it wont take nearly as long for yours.
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06-07-2004, 10:01 PM | #3 |
Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
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Where can you get 8lug 15in rims? I just need two for my 14FF rear.
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI |
06-07-2004, 11:47 PM | #4 |
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4wheelparts, Summit, Discount Tire. just a matter of getting ahold of someone who is willing to look.
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06-08-2004, 08:59 AM | #5 |
Registered User
Join Date: Jul 2001
Location: Atlanta GA
Posts: 1,704
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If they are factory they are 16 x 6.5. Stock tire should be a 235 85 16.
Rim choice is VERY limited on 15 inch 8 lug. 16 inch 8 lug is much better choices and it's a pretty common tire size now. Most of GM trucks are running 16's. www.rim-zone.com has some deals.
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Grim-Reaper 70 Pontiac LeMans Sport Convertible, worlds longest resto in progress Looking for 71-72 2wd Blazer or Jimmy Project |
06-08-2004, 11:00 PM | #6 |
Four Wheeler
Join Date: Jul 2002
Location: Decatur, IL
Posts: 101
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Well, I hope there's there's not much grinding involved! I just went ahead and ordered a set of 15x10's from Summit. Hell of a price, too. $240 delivered via 2-day! Now time to see if there's a deal on tires floating around. So far I'm looking at the Dunlop Mud Rovers in 35x12.50 which are $518 shipped from Tirerack. Can't wait to get some meat under this beastly old truck!
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'84 K20 4x4 350 V8 - Weiand intake - Headers - 4" Tuff Country lift - 35x12.50 ProComp M/Ts on 15x10s |
06-09-2004, 09:12 AM | #7 |
Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
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Do you have the part number to the rims you ordered?
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI |
06-09-2004, 05:35 PM | #8 |
Four Wheeler
Join Date: Jul 2002
Location: Decatur, IL
Posts: 101
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They were part # USW-75-5080... $57.95/each. A decent looking 8 spoke design which will be perfect for me to tear up off road.
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'84 K20 4x4 350 V8 - Weiand intake - Headers - 4" Tuff Country lift - 35x12.50 ProComp M/Ts on 15x10s |
06-09-2004, 06:50 PM | #9 |
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hate to break it to you, but you could have got them for 40.00 ea, and probably free shipping for 4wheelparts.com. and with 4.25" BS, you've got some grinding ahead of you.
it was mentioned that there is more wheel availability in 16x8, this may be true, however the tire selection for 15" tires, and the ability to find said sizes far outweigh the different rim availability. |
06-09-2004, 09:50 PM | #10 |
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My friend runs 15 inch wheels on his blazer with 14bff rear and D60 front he had to grind a little bit but wasnt too bad I imagine if you had small 4 inch grinder it would suck but if you have a 5 or 7 peice of cake.
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06-09-2004, 11:22 PM | #11 | |
Four Wheeler
Join Date: Jul 2002
Location: Decatur, IL
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Quote:
The availability of tires for 15" wheels is why I am going that route. That's also why I don't mind having to grind.. because in the long run it will be worth it. Actually, I bought those 15x10s AND 35x12.50 Pro Comp M/T's for $100 less than the same tires alone for a 16" wheel (and my wheels are 6.5" wide so even that wouldn't have worked). I can't wait til Friday when I get the wheels in my hand and can start hackin!
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'84 K20 4x4 350 V8 - Weiand intake - Headers - 4" Tuff Country lift - 35x12.50 ProComp M/Ts on 15x10s |
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06-10-2004, 12:24 AM | #12 |
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i dont have a link, but the 40.00 wheels are very common on CK5.com rigs, actually, that's what i plan on running. they are 15x10, and are available in 4.25 and 2.5" BS.
in regards to your 6.5" wheels "not working" with 12.50s, actually they'd work very well. the narrower wheel would hold a bead better, and allow you to run lower pressures when offroad. lower pressures = more traction. |
06-10-2004, 01:36 AM | #13 |
Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
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So with just regard to the 14FF there wouldn't be anything to modify to run 15s? What about back space options, what would be better? I would like to run 15s all around the truck it being a c10 with soon to be 14ff swap in rear. So it would be 5x5 fronts and 8x6.5 rears it the same style rim. I know I can get 17s but there isn't that much I have found for a tire selection in a 17.
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI |
06-10-2004, 02:09 AM | #14 |
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As far as i know 15s will go on the back without any problems Ive seen some older duallys come factory with 15s My friend jason put 15s on his blazer and they fit on the back and he had to grind the calipers on the front but im sure it all depends on what backspacing you get.
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06-10-2004, 02:27 AM | #15 | |
Four Wheeler
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Location: Decatur, IL
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Quote:
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'84 K20 4x4 350 V8 - Weiand intake - Headers - 4" Tuff Country lift - 35x12.50 ProComp M/Ts on 15x10s |
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