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Re: when to put screws in the rims for slicks [Re: bigdad] #915401 01/29/11 01:16 AM 01/29/11 01:16 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Quote: I would like to hear an engineer tell us just how many lbs of air pressure holds a tire to the bead I am not but I'm sure it will amaze you Sorry but I have seen tires come off the rims when the car was sideways ... your not going to see that occur on mine ... as to what pressure it takes... it s a matter of which has the greater pressure... is it the air pressure inside it or the side loading of the tire going sideways. You better start screwing those front tires too then LAST COMMENT FOR ME ON THIS TOPIC STAY SAFE FELLAS Yeah I figured you'd quit now... since the fronts run about 45# pressure VS my 6.5 to no more than 7# with 14" across and thats not even figuring the total surface area thats on the ground so you better figure out which has the greater load .... but your right this IS my last word on this tread

Re: when to put screws in the rims for slicks [Re: MR_P_BODY] #915402 01/29/11 08:36 AM 01/29/11 08:36 AM
Joined: Jan 2003 Posts: 2,915 A shed in England Tig master
Tig master Joined: Jan 2003 Posts: 2,915 A shed in England	FWIW I first ran screws on the car when it was running 12's, 29 x 10 Slick on 8 1/2 inch convo pro. @ 10 psi the tyre moved 4 inches on the rim I've done it ever since. I run tubes now for the extra sidewall strength, it does improve the 60ft's, at least on my car. If I'd been running tubes back then I have no doubt I would have torn the valve out of the tube. IMHO for the little time and money it costs it's worth doing for the extra insurance, I've also yet to see a car run slower after screwing the tyre to the rim. '74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03

Re: when to put screws in the rims for slicks [Re: Tig] #915403 01/29/11 03:38 PM 01/29/11 03:38 PM
Joined: Mar 2010 Posts: 939 glendora, ca. D Deepockets super stock
Deepockets super stock D Joined: Mar 2010 Posts: 939 glendora, ca.	i dont know why some would move and some dont. i mark mine every time they are mounted. i use no lube, just water to seat the bead. the tire is a 11" tread width and 29" tall. i do leave off a brake with a mild 440. best 1/8th of 6.80. the move 1/16 to 1/8 every hit. i'd screew them, but the car is made to look like a street car and i dont want that look. i also run tubes for the time being , since i picked up a screew in one tire. i will also periodicaly deflate the rear tires as to allow the tube to find it's way back where it started.

Re: when to put screws in the rims for slicks [Re: Deepockets] #915404 01/29/11 06:50 PM 01/29/11 06:50 PM
Joined: Jan 2008 Posts: 449 Wisconsin sjs64polara mopar
sjs64polara mopar Joined: Jan 2008 Posts: 449 Wisconsin	Back in the day, my dad always patched tubes and when they got so bad he gave them to us kids to use to float around on the lake.

Re: when to put screws in the rims for slicks [Re: sjs64polara] #915405 01/29/11 07:31 PM 01/29/11 07:31 PM
Joined: Dec 2005 Posts: 11,530 Fulton County, PA C CMcAllister Mr. Helpful
CMcAllister Mr. Helpful C Joined: Dec 2005 Posts: 11,530 Fulton County, PA	Big tire+quick 60'+low pressure=screws. I've always ran screws. Didn't bother to mark the wheels or any of that. If it might be beneficial and it can't hurt and it doesn't cost anything, I just do it, but that's me. I know my 60' improved a bit and became more consistent when I went to 16 screws per side. If the results don't match the theory, change the theory.

Re: when to put screws in the rims for slicks [Re: rebel] #915406 01/31/11 01:02 AM 01/31/11 01:02 AM
Joined: Nov 2007 Posts: 1,600 Alberta Canada StrokerAspen top fuel
StrokerAspen top fuel Joined: Nov 2007 Posts: 1,600 Alberta Canada	Quote: Quote: You can see that the wrinkle is pulling from where the screw is on the wheel. 5 screws around the diameter of the wheel will make for large paddles, but fewer paddles (4 paddles) this doesn't compare with my pic showing NO screws at all. somethings not right with this theory. Not sure what your trying to get at here... No your situation won't compare with this set up BECAUSE your not running any screws. Screws serve the purpose of holding the tire where it is, but they also serve the purpose of controlling the "paddle" of the tire.

Re: when to put screws in the rims for slicks [Re: StrokerAspen] #915407 01/31/11 01:27 AM 01/31/11 01:27 AM
Joined: Oct 2007 Posts: 3,978 Hilltown Pa 1967dartgt master
1967dartgt master Joined: Oct 2007 Posts: 3,978 Hilltown Pa	Used to run screws with slicks, now I just glue the drag radials because they use alot more air presure. Brett Miller W9 cnc'd heads STR Chassis fabraction

Re: when to put screws in the rims for slicks [Re: 1967dartgt] #915408 01/31/11 01:37 AM 01/31/11 01:37 AM
Joined: Jan 2004 Posts: 13,247 Mt. Vernon, Ohio dartman366 I Live Here
dartman366 I Live Here Joined: Jan 2004 Posts: 13,247 Mt. Vernon, Ohio	Years ago I ran slick's and did not screw the rim's, twice I ripped the stem out, finally drilled and screwed the rim's and have not ripped a tube since, so now you know my opinion. Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.

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