stressfulcar

Hello everyone.I have sold my 12 Bolt and will soon order a 9" that is narrowed 3" per side. Also will be doing a minni-tub on my 95z. I plan to run 10" weld alumastars w/ 29.5x10.5ws. Can anyone tell me the correct BS for this settup? I will also be doing the mandatory adjustable spring mount and offset lca's. I will be doing most of the work myself, so anyone with tips feel free to chime in.

skipperbisket

iTrader: (4)

first off thats WAY more tire than you will need,second Dan at Wolfe has posted here before that this particular tire is better off being run on a 12" wheel. with the rear narrowed 3" per side 4.5" would be the back spacing needed.

what kind of setup are you building that you think you need that much tire?

stressfulcar

I disagree. Combo/ Big M 10.200, 572ci, 13.5:1cr, AFR 357 Magnums, 7xx lift, 250-300 n20. Not trying to be an *** but, I think I do need that much tire

skipperbisket

iTrader: (4)

so you already have these parts? still, there are guys like Wolfe that are running more power than you're talking about and still doing it on a non W tire. if you set it up right you wont need that much tire.

427

iTrader: (3)

People that run on a non w tire do it because of rules. Everybody should run the tire they feel most comfortable running, regardless of what someone else does.
On my car, the 12 inch rim works best with the 10.5/29.5W. It did run well on a 10 inch rim, but the 12 inch drove better and was great on marginal tracks.

Kurt

skipperbisket

iTrader: (4)

from what i've heard from some of the big time 10.5 guys is that the 12" wheel gives the tire a larger contact patch which to me seams like it would make it a bit more stable on the big end, especially if running in the kind of ets that the outlaw guys are running.

gator's 99TA

iTrader: (2)

skipper why are you arguing with 427? Wheel 2 Wheel seems to have a bit more knowlege than the rest of us. its nice what you "heard" but lets listen to the advice of what those that have had sucess running that particular combo.

running less tire than optimal is not my idea of fun. its called class rules.

skipperbisket

iTrader: (4)

first off show me where i agrued anything that 427 said? running more tire than is optimal is not my idea of fun either. several people all over have shown that if you set the car up right, and know what you are doing, you can do more with less, now by less i'm not saying, throw a 26x11.5 on there, i'm saying maybe a 28x10.5w, or a 29.5x10.5 non w, ther are guys running well over 200mph and in the way bottom 7s that i know of, and i'm sure there are some quicker/faster and doing it on the 29.5x10.5 non w. running 28x10.5 non w on my car, ~900rwhp, wolfe suspension and setup....

Z8'S

iTrader: (6)

Just curious as to what your car runs?
There isn't really a very big database on 4thgens with stock suspension running REAL fast to get the answer for combo's yet.

NRC-Motorsports

skipper its not that it gives a bigger tire patch, its the fact they run can run more air in tire,and that in turn makes car more stable upstairs evan a1/2 lb make a big difference when your going that fast
also most of the quick cars like wolfes are doing it on a radial tire which in its self is a much more stable tire[stiffer sidewalls/tread] than a slick,even in the smaller sizes that they use,some are even going to radial slicks when allowed again more stability,
tire sizes/types are one of those debates that can go on forever, ,bob

NRC-Motorsports

got any underhood picts of this combo yet, and like Kurt said if your not bound by a class use what makes you feel comfortable,and be safe, bob

stressfulcar

Never meant to get all this started,just needed a simple answer to a simple question.I already had 28x10.5 non ws on the car when I had the 383 in it. Ran 10.0s-10.20s every pass. The tire i'm choosing now is my personal choice,i'm not racing in any classes,nor do I care about setting any records.And yes I do have these parts.

skipperbisket

iTrader: (4)

what is your et/mph goal with the big block/nitrous setup? what kind of race weight, and what rear suspension?

jshiver

iTrader: (6)

here is what I am doing...9" narrowed 3.5" per side with 15x10 magnums with 5" backspacing. I am running a 315/60/15 radial ( same size as 29.5x10.5w)...I am using adjustable spring perches and offset lower control arms and mini-tubs...hope this helps some.

skipperbisket

iTrader: (4)

thats basically the perfect setup for what you are doing jshiver, are you running the Wolfe tub kit or something you made?

ty_ty13

iTrader: (42)

if he bracket races the car at all then a big tire is more predictable on not on the ragged edge... just a thought

skipperbisket

iTrader: (4)

how many bracket racers you know that run nitrous? i agree though in a bracket car the bigger tire is best because you want total reliability and consistancy.

mongse

iTrader: (2)

The 29s shouldn't be too much wider than the 28s. The height is the problem, but that should be solved w/ the mini-tub. I fit 28s w/o a tub and with a stock width rear.

If you want some feedback on backspacing w/ the Welds, you might want to ask Steve Turley(InconFormula) or Mike Brown(TwinTurboCE). I think they ran a 29x10.5W on the black Formula at one time. Rick (BigRick) ran a regular 29x10.5 on his LT1 car too. I would think a 4.5" B/S on a 10" wheel would work w/ a rear that's narrowed 3".

I like the sound of the Big M. You going to run in ORSCA or any of the EZ races down south?

Z8'S

iTrader: (6)

Mine is 4.5 inches per side narrowed 9 inch 15x10 with 5 bs.With 315/60/15 MT Drag Radial.Wolfe mini tub and adjustable spring perches.LCA's shimed all the way in.Wanted to put the car down on the tire more.

Nine Finger 02 Z28

iTrader: (11)

I have 29.5 10.5w's on my car with out mini tubbing.Not sure of wheel offset.I also run a 30 12.5 ET Street with the same wheels.