ericburt

freind is selling 15 x 10 welds how wide of a tire would that be 315?
would 15 x 10 bolt on and fit without touching or rubbing on a stock z28

lower et then u

The 315's will if you should have at least 10 inch wide rim for 315.s. The 15 inch weld rim is going to hit the brakes unless you change to drag brakes or grind the calaper down a little bit.

ericburt

thanks steve

wlsmoku

you can also go with a 295/50 (26") - I ran that for years

ndfrsd6

iTrader: (5)

grind a little more than a bit lol.....

98CamZ28

iTrader: (31)

Heh, I was thinking the same thing

ndfrsd6

iTrader: (5)

lol.... yeah it sucks people dont get it till they actually start to grind them

ericburt

can anyone clarify if these rims will fit my car?
http://longisland.craigslist.org/pts/844049944.html
how wide of a tire can i go with an 8 inch wide rim, the guy said 8 inches, could that be 305?

ndfrsd6

iTrader: (5)

what backspacing ......they look like 6 in give or take i would say they will not fit....you need 7.5 backspacing for it to fit properly

ericburt

even if they stick out of the well a tiny bit i dont care, as long as they bolt in and tight i only want a few good launches at the track.

ndfrsd6

iTrader: (5)

yeah they'll stick out alot lol .....

Nabdrill

iTrader: (19)

They might bolt up but the BS looks like it would have the tires well outside the fender.
For our cars, here's the info you need:
15x8 wheels need 5.5" or higher BS
15x10 wheels need 7.5" or higher BS
Basically, you don't want any more than 2.5" of the wheel width outboard of your axle flange.
Centerline convo-pros or Bogart's wheels are really the only wheels that will bolt up without modification to the existing brakes. Centerlines will not require longer wheelstuds either.
Weld Draglites or Prostars require a good bit of grinding on the front and a scary amount of grinding on the rear (without spacers). So, in short...
your looking for wheels with a 5 x 4 3/4 bolt pattern with the width's and BS's above.

wlsmoku

my telstars were 15x8 with a 5" backspacing. they were flush with the outside of the body, and with a hard enough bump or too many people in the car it will rub the quarter panel. 5 1/5" is ideal, but you CAN do 5" and not look too ghetto fabulous. since then with the new rear, I got 15x10's, but I had the rear narrowed 2 1/2" each side and it's perfect.

btw - you thought the prostars needed a lot of grinding....hahaha Telstars....i'm surised the caliper hasn't busted. I grinded all the way back into the sliders...and then some!

ericburt

thanks alot for all the info... With slicks at what RPM should i dump my clutch at? stock z28 with slicks, whats a safe range to dump the clutch, i am only gonan do 2 runs and i want a really good time, i was thinking 3500rpm?(with a pair of mt drags)

wlsmoku

with the stock clutch? I made 1 pass...compltely stock with slicks...12.57 and my clutch hated me...your call.

ericburt

12.57 with a stock car?

wlsmoku

type o - I meant 12.75...and yes - all stock. your clutch will really hate you though. of course I left off the limiter haha

Duffster

iTrader: (103)

i'm a STOCK engine (true dual exhaust) on et streets doing 12.37...

ndfrsd6

iTrader: (5)

do you have a 12 bolt at least cause your 10 bolt wont last long coming out at a high rpm on slicks and your clutch wont like it either ....

Duffster

iTrader: (103)

Nope. Wife doesn't know I'm trying to break it. . . . . . . . . . . .