20x15 wheel

[chevyguy_72]

Can a 20x15 wheel fit under a coil spring truck with simply a tub? or is other modification needed? the rear is dropped 6in with a drop coil. I plan on ordering a custom offset so I should be able to get the wheel centered where I want it... just concerned about it rubbing on the coil or bump stop bracket... if I go 20x15 wheel I would be wrapping it in the M/T Sportsman S/R, LT 29 x 18R20. Height is dead on what I am looking for.
Thanks in advance...

[Pro Performance]

You should be Ok with the 15" wheels with just the sheet metal work, and no frame mods. It will come close, but will have enough clearance. Here you can see a 14" wide wheel with a PB onboard bag setup, and it would barely have room if there was a coil spring sticking outside the frame some in front. You would have to move the wheel as far outside as possible.

Measuring is always best when trying to squeeze the maximum in there. Do they offer a narrower tire than an 18" wide? Maybe a 16"?

[Hart_Rod]

Originally Posted by Pro Performance

You should be Ok with the 15" wheels with just the sheet metal work, and no frame mods. It will come close, but will have enough clearance. Here you can see a 14" wide wheel with a PB onboard bag setup, and it would barely have room if there was a coil spring sticking outside the frame some in front. You would have to move the wheel as far outside as possible.

Measuring is always best when trying to squeeze the maximum in there. Do they offer a narrower tire than an 18" wide? Maybe a 16"?

What size and brand are the rear tires?

[rwade]

I can't swear rob, but they look like 405/25/24's. definitely Pirelli tire tread

Wade

[Pro Performance]

It has to be that 405/25/24.... I agree.

[chevyguy_72]

Yeah loving those rear tires... would hate to see the price tag... Pirelli doesn't appear to be making them anymore or they are just starting... cant really find any to buy except Ebay and Pirelli doesn't list on their site...

as far as M/T they offer:
Tire: 29X15.00R20LT Rim width: 13.0-14.0
Tire: 29X18.00R20LT Rim width: 15.0-16.0
They do have the 15in wide tire but then it drops down to a 13-14 rim width which I am having trouble locating... Intro, Billet spec, etc tends to jump from 12-15 with nothing in between...

[rwade]

As far as Pirelli not making them, been hearing that for last few years. I think there are way too many people running those for them to stop. What I have heard is they make a "run" of them for the year at a certain time and supply gets low before the next run. Maybe give them a call to confirm that if your seriously considering them, that's what I did 2 years ago.

Wade

[Hart_Rod]

Originally Posted by chevyguy_72

Yeah loving those rear tires... would hate to see the price tag... Pirelli doesn't appear to be making them anymore or they are just starting... cant really find any to buy except Ebay and Pirelli doesn't list on their site...

as far as M/T they offer:
Tire: 29X15.00R20LT Rim width: 13.0-14.0
Tire: 29X18.00R20LT Rim width: 15.0-16.0
They do have the 15in wide tire but then it drops down to a 13-14 rim width which I am having trouble locating... Intro, Billet spec, etc tends to jump from 12-15 with nothing in between...

Did you narrow your rear end? I have a 7" backspacing on a 20x12 with a factory 68 rear and I'm running 31x16 20 M/T SRs on my 20x12 rims and they fit fine. The problem I'm having is MT quit making the 31x16s and I'm not sure what I'm going to replace these with. I don't want to step down to a 29" tall tire or go to a narrower tire. So I'm not sure what my options are going to be....

[Pro Performance]

Originally Posted by chevyguy_72

Yeah loving those rear tires... would hate to see the price tag... Pirelli doesn't appear to be making them anymore or they are just starting... cant really find any to buy except Ebay and Pirelli doesn't list on their site...

as far as M/T they offer:
Tire: 29X15.00R20LT Rim width: 13.0-14.0
Tire: 29X18.00R20LT Rim width: 15.0-16.0
They do have the 15in wide tire but then it drops down to a 13-14 rim width which I am having trouble locating... Intro, Billet spec, etc tends to jump from 12-15 with nothing in between...

Intro and some of the others will make any width you want, and just becomes a non-standard width. Instead of them being able to buy the outer, they have to create by narrowing a wider one down. For a 14" wheel, they will narrow down a 15" outer.

The tires are available and can get them for you. I have gotten them in the past for customers. I have heard the same thing about not being available, but never had an issue getting them so far. Pricing for tires changes constantly, and last time I checked, they were $470 a piece.

[chevyguy_72]

Originally Posted by Hart_Rod

Did you narrow your rear end? I have a 7" backspacing on a 20x12 with a factory 68 rear and I'm running 31x16 20 M/T SRs on my 20x12 rims and they fit fine. The problem I'm having is MT quit making the 31x16s and I'm not sure what I'm going to replace these with. I don't want to step down to a 29" tall tire or go to a narrower tire. So I'm not sure what my options are going to be....

Similar setup as you... stock width 67 rearend... I haven't had much luck finding other tires that will work for the rear in 20s... Either the M/T options (29x18 or 29x15) or you jump down to a 315/35/20 which is 12in wide and 29tall (toyo makes this one but other brands might as well) or you can go to a car tire but I have been told those might not hold up so well to the weight of the truck as they were designed for light weight vettes and exotics...

Originally Posted by Pro Performance

Intro and some of the others will make any width you want, and just becomes a non-standard width. Instead of them being able to buy the outer, they have to create by narrowing a wider one down. For a 14" wheel, they will narrow down a 15" outer.

The tires are available and can get them for you. I have gotten them in the past for customers. I have heard the same thing about not being available, but never had an issue getting them so far. Pricing for tires changes constantly, and last time I checked, they were $470 a piece.

$470/ piece for the 24in rears? that's not bad... about the same at the M\T but the 24in wheel that can handle it would prob be much more $$$$
As far as custom widths from intro etc what kind of money does it add to have them make a 13/14 inch wheel... I am a little concerned over this process as on the Camaro forum there were companies doing custom width wheels that were not cheap and they were having horrible balancing etc issues with them... then the company wouldnt stand behind them so guys were stuck with $5k worth of paperweights (Not saying that would be the case here... just explaining weariness)

[rwade]

I've got a 14" wide Raceline and no issues balancing. My set of 24X9 & 24X14 were about $3300-$3400 delivered, if I remember correctly. About a grand less than intros (and I've had them too, & loved them)

Wade

[Hart_Rod]

Originally Posted by rwade

I've got a 14" wide Raceline and no issues balancing. My set of 24X9 & 24X14 were about $3300-$3400 delivered, if I remember correctly. About a grand less than intros (and I've had them too, & loved them)

Wade

With tires?

[chevyguy_72]

which racelines do you have? more pics somewhere?
and wondering the same as rob... which tires and sizes you running?
Pirellis we discussed further up the thread?

Originally Posted by rwade

I've got a 14" wide Raceline and no issues balancing. My set of 24X9 & 24X14 were about $3300-$3400 delivered, if I remember correctly. About a grand less than intros (and I've had them too, & loved them)

Wade

[rwade]

I am running the 405/25/24 & 255/30/24 on mine with Raceline Speedster 5

[chevyguy_72]

Originally Posted by rwade

I am running the 405/25/24 & 255/30/24 on mine with Raceline Speedster 5

Very nice...
Assuming your rearend is narrowed?

[rwade]

Yes, 11" total.

Wade

[BR3W CITY]

With the exception of brake clearance, you all are making me glad I only run a 15" rim. I really like only paying $150/e for MTs on my 15x12's

[rwade]

Yeah, they are a little more than that. What size tire you running on that 15x12?

Wade

[chevyguy_72]

Originally Posted by rwade

Yes, 11" total.

Wade

what rear suspension you running?

[rwade]

Modified factory trail arms, bags in front of axle, with Porterbuilt weld in notch, I set it up to where it's about in the middle of the "extreme" and "mild" notches they sell.

Wade

[Bhelton]

Originally Posted by rwade

I am running the 405/25/24 & 255/30/24 on mine with Raceline Speedster 5

You gotta stop posting pics of this beast, it makes me want it! Lol

[rwade]

Thanks Ben, I'm close to getting it running again, then I'll be able to get some updated pics. Also picked up a 69 SWB gmc about 2 weeks ago, kind of a driver, but oh the possibilities.

Wade

[chevyguy_72]

Originally Posted by rwade

Thanks Ben, I'm close to getting it running again, then I'll be able to get some updated pics. Also picked up a 69 SWB gmc about 2 weeks ago, kind of a driver, but oh the possibilities.

Wade

Where do you even find truck that look like that?
Everything I look at is a mess....

[BR3W CITY]

Originally Posted by rwade

Yeah, they are a little more than that. What size tire you running on that 15x12?

Wade

325/50/15 MT DOT. Could actually go a little bigger. Stock width 12 bolt, custom beadlocks.

[rwade]

Found the gmc on Craigslist. Sometimes good stuff pops up. Original 307/turbo 400, posi trac.

Post some pics of the 325/50/15 I'd love to see how they look on your truck

Wade