how much air pressure in drag slicks

(shocks, traction bars, etc..).

!Ford makes it, Chevy shakes it...86 Coupe S/S, BBC Powered 10 to1 489ci very mild..615/.620 flat tapped cam,(Procomp heads)850 alky carb, Powerglide, 4.10's 9" tire.best to date= 1.331 60' & 6.053 @ 112mph 1/8th, Has been 9.90's In the quarter but have not run the quarter since figuring out some issues, Car & motor built by me, Build cost of entire car Just under $5000.00, Are there any markings up the sidewall where it may have rolled under? It’s really going to come down to testing your tire on your bike at the track you are racing. Mickey Thompson strongly suggests investing in a good tire pressure gauge and that you keep accurate and complete records of each pass. 12 lb 1.44 60 foot.

I've run the 275/40 and 315/35 Hoosier and the 325/45 M&H using those tire pressures. It was very cold that day.. about 40-42 degrees F. I was slipping all the way down to about the 1000 foot mark..scary ride .... MT recommends 16-20 pounds) or was it the cold track? If you’re trying to go as fast as possible it’s best to run as much pressure as possible. I have 10 X 26" slicks; ET DRAG® AND ET STREET™ VEHICLE WEIGHT TIRE SIZE AIR PRESSURE OVER 3,000 POUNDS UNDER 30" DIA. Hopefully i can find some used rims. https://www.youtube.com/watch?feature=player_embedded&v=kJaN3fgNl1k, Naturally Aspirated - Uratchko Racing Engines, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. There is really no good way to recommend tire pressure. I had that happen once when I ran a set of street slicks at about 12 psi that should have been 20+ psi, could see a good two or three inches of contact up the sidewall. why such a big tire on a stock car?

Just my 2 cents. It was my first time with slicks.

Getting the right pressure has a lot to do with experience and monitoring your vehicle's performance. If nothing else was broken on the car what do you think it was????

The tire will actually cup and wear the edges but the center is lifting and not gripping the track. I agree you don't need to smoke them until they light on fire, but the track was cold and there was a lot of water. I didn't launch hard, but didn't spin that much on the start, but definitely started skating badly all down the track after shifting into 2nd and 3rd if I put my foot into it too aggressively. Hoosier Slicks 10 P.S.I. But there are lots of variables. Also, I can't figure out MT's recommendations.

If they are bias ply slicks you need lower air pressure (IMO). AND UP My car with my 172 pound body wieghs 3,814 in total. 17psi is much to high of air pressure for slicks (are they radial slicks?). Don't be down on yourself cause he ran decent. This "can" help with weight transfer. A forum community dedicated to drag racing drivers and enthusiasts. I had bought them for a different car that I have since sold, and had them stored in the garage so I figured since I already owned them I would give them a try just to see what happened. I vote for jumping it up to 15-16psi as well. are you running tubes in them?

For what it's worth, I run 27x9 Hoosier QTPs on my 3500lb 78 Malibu with an a/t. Surprisingly, on a slick, you can go too low on air pressure and have less contact surface.

Did you make anymore passes??? In fact, the right pressure for your car might change between passes at the track. Every run after that, it felt like the rear was drifting out to the right up to the 1000' mark and I had to back peddle to keep it in line..she always seemed to straightened out about the 1000' market, and only then was able to floor it the rest of the way. With 16 lbs the car spun a little off the line then started to skate around down the track after 2nd gear. Others tell me it is hogwash and I need to drop the air much lower. kelemor: That is exactly the way I would describe it. Originally developed before the integration of an inner liner to capture the compressed air within the tire, we now find significant benefits from installing tubes in tires ranging from 26.0/10-15 to the 33.0/10.5-16W tires used in the Pro Extreme series of the ADRL. I think I need more air yet. Try around 14 to 16 psi and see how the car is on the top end. It was a street test and tune day..few high HP cars.. and a lot of stock grocery getters so little track prep. Here is what MT says about slick pressure. Tire pressure is affected by tire compound, track conditions, vehicle weight, horsepower, and many other variables. Here, I do this with 20 psi in my 30x10.5 Hoosier slicks, not W's, not radials, regular old everyday BIAS PLY SLICKS! I have both and on my stock wheel base, I normally run about 25-30 pounds of air pressure. Jerry - Systems Specialist, IT consultant, Hot Rod Enthusiast -- Searching for a way to tap into the hidden strengths that all stroked SBC’s have.

These are on 15 x 10 Billet Specialty Street Lites now. The first is whether you are using a DOT street tire or a race slick. If you’re bracket racing it won’t hurt you to give up a few mph for more consistency.

What I mean by that is I gauge what I think the track will hold and then I’ll give myself a cushion and run a few lbs lower. I have run less.

The tire maximizes its contact patch with the track for the best traction at launch, and. Remember, eight pounds of tire pressure is great at the starting line, but those same eight pounds are holding up the back end of the car while you are hurtling down the track. Hell, I even get a minimum of 175 passes out of a set before I sell them. something to look at also. Next time @ the track, 17 psi, 1.56 60' on several occasions with one 1.545 thrown in.

I think I might try and bump them up quite a bit just to see how they feel. New slicks, cold day, and too much air in my opinion. Sometimes I run lower psi than I have to just to make sure I don’t spin. So next year i would try some of the suspension advise that has been given and start around 11-12 lbs and go up and down from there. Proper air pressure is critical to the best performance of your ET Drag or ET Street racing tires. I took my 2011 Mustang GT with a manual trans to the track today. well, nobody said it directly but it seems the MT instructions on air pressure is not realistic. No tubes, no rims screws either! That depends on quite a few variables. A shorter wheelbase bike can 25 psi on a track that a longer wheelbase bike may only get away with 14 or 15 psi. Hell, I even get a minimum of 175 passes out of a set before I sell them. No tubes, no rims screws either! Find one that works for you in practice for that given day and check it before each pass. Since that day i have tried a little lower, no real improvement, i tried a little higher and it only took 2 lbs more pressure and the skating came back.

Follow this link for more information about. Pick a starting point and increase your air pressure by 2lbs every pass until you’re happy or start to spin (if you start to spin, back it down some). Tires are a big part of traction, but they are not everything. Your browser either does not have JavaScript enabled or does not appear to support enough features of JavaScript to be used well on this site. Once you have established a good pressure, it won’t vary to much from track to track.. Most racers will end up with 0.5 - 2 psi more air pressure in a Mickey Thompson tire. These are on 15 x 10 Billet Specialty Street Lites now.

There was a fairly decent headwind at the track so I just figured maybe that was it.

- i have 1432's and i run 9.5lb's DZ: Should I run tubes in my slicks, or not?

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Maybe it normally ran better than that. Ya I never thought about that, I was running radial street tires up front and bias slicks. Robinson: “Over the last few years, racing tire tubes have taken on a new role. Also, in general slicks will sway a little bit, takes some getting used to. Then one day, an accidental overdose of Camaros.net altered my body chemistry. I know some folks feel like it is a secret.... but I would like to see the range that folks use in setting thier Drag radials and slicks. The Ultimate budget build! If you’re simply bracket racing I would recommend picking what I call a “safe” pressure.

It was very cold that day.. about 40-42 degrees F. I was slipping all the way down to about the 1000 foot mark..scary ride and my 1/4 mile times and mph were as bad as when I was using BFG TA street tires, though my 60 foots where a bit better. If you have been running another brand of slick, we recommend you start with the same air pressure you were running. Tire pressure is affected by tire compound, track conditions, vehicle weight, horsepower, and many other variables. On my bar bike, I try to stay as close to 10 lbs as I can. I will try again next spring when the weather is warm with lower air pressure. My tires are not screwed, I don't have any pics. For this reason I would have spun them until I saw smoke. I always liked to run as much tire pressure as the track would consistently allow. One quick and easy thing to try is to disconnect or remove the front sway bar. My 67 camaro weighs 3600 lbs I ran 28x11.5x15 Mickeys and ran 10 lbs.

And you have to take track conditions and weather into account as well as bike set-up (shock settings, etc…) and size of rider. Here, I do this with 20 psi in my 30x10.5 Hoosier slicks, not W's, not radials, regular old everyday BIAS PLY SLICKS!

Did you heat them up enough? Recommending air pressure is not easy, since there are so many variables that affect it: i.e. The track was Englishtown, NJ.. a nice track, but not that day. Rear tire air pressure really depends on your motorcycles setup and your riding style. He probably hase 100 times more passes than you do in his car and it is all sorted out. Getting the right pressure has a lot to do with experience and monitoring your vehicle's performance. I have made many passes before on slicks, but they were with lighter fox bodies with auto's and I have never had this problem before. I have always run between 18-20psi on the drag radials.

Kind of like it was drifting around on the top end. Nope no screws, but this year iam going to run a true slick and those i will be screwing. The car weighed 3,814 pounds with me in it that day and I weigh about 172 pounds. "It's best to keep them covered up and avoid exposing them to extremely high or low temperatures," he explains. No I am not running tubes, they claim they do not need tubes. Now in regards to your street tire, it also depends (in my opinion) on your goals. Slick or street tire, brand/model of tire, size of tire, rim width, number of passes on the tire and even age of tire. In fact, the right pressure for your car might change between passes at the track. The best advice is to run the highest air pressure you can get away with. Hoosier 28 x 10 DO5's here. AND UP OVER 3,000 POUNDS OVER 30" DIA. Reed solid FT cam (240/. I didn't run tubes in my MT's before with no problems with stability. I didnt like that feeling to much so on some advise from some friends that told to run the same tire pressure i would in a normal slick i put it down to 10 lbs and the car hook hard and didnt skate at all down track.

Drop the air pressure to 5 psi and keep the tires away from direct light. I kept listening to my friends with full tire slicks running 5 and 6 psi, never could get it to work with a 10.5, finally settled in at 9.5 psi with them.

What did it feel like in the seat???

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Getting the right pressure has a lot to do with experience and monitoring your vehicle's performance. You will definitely be able to run a lot more air pressure in a DOT tire then you ever would in a slick, but I’m just getting into running slicks myself so I’ll let some of the veterans handle that specific answer.