BFG DR Problem Please help
Thread Starter
Instructor
Joined: Apr 2002
Posts: 139
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From: Palatine IL
BFG DR Problem Please help
Hey guys I just put 295/35/18 on the back wheels of my z06.. I took my car for a test drive and the back end seems to float... It scary its almost wobbly... The tires have 35 psi... What the heck is going on... ?? Please help me
Drifting
Joined: Sep 2001
Posts: 1,421
Likes: 3
From: Memphis Tn
Re: BFG DR Problem Please help (Cobra Skinner)
Way, way too much air dude!!!!!!!!!! Lower to 20 psi for the track, you can play with that # to find the best sticking point. That will eliminate the float, air them back up for the drive home. :D
Thread Starter
Instructor
Joined: Apr 2002
Posts: 139
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From: Palatine IL
Re: BFG DR Problem Please help (ScreaminDemon)
When I take this on the highway is when I get float though and thats at 35 psi... not at the track... Could i run them at 20 psi all the time so I won't get float?
Drifting
Joined: Jan 2002
Posts: 1,731
Likes: 1
From: Bay Area CA
Re: BFG DR Problem Please help (Cobra Skinner)
If you are comparing the ride to the runflats, it does feel very different at first. :)
I would drop the pressure down to abou 28psi. On drag radials I usually will run 25psi at the most. If you think your tires are wobbly, you should take a ride on ET streets at 15psi on the freeway. :lol:
Play with the pressure a little. Don't worry, the car will handle just fine. :cheers:
I would drop the pressure down to abou 28psi. On drag radials I usually will run 25psi at the most. If you think your tires are wobbly, you should take a ride on ET streets at 15psi on the freeway. :lol:
Play with the pressure a little. Don't worry, the car will handle just fine. :cheers:
Thread Starter
Instructor
Joined: Apr 2002
Posts: 139
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From: Palatine IL
Re: BFG DR Problem Please help (ScreaminDemon)
Ok also will then run at 25 or 28 psi for long period of time on the highway such as 200 miles or so without blowing out?? :D The number one cause of tire blow outs is underinflation so i'm worried about underinflating them to much and boom there goes my $250 tire :eek:
Melting Slicks
Joined: Dec 2002
Posts: 2,480
Likes: 62
From: Middletown DE
Re: BFG DR Problem Please help (Cobra Skinner)
I had the SAME problem.. I actually hated driving on the highway with the DR's and i also did not want to drive with the lower psi...
It seems to be better under 30psi.. i am still hesitant at driving at 25, so i will deal with whatever wobble i have left at 28.
It seems to be better under 30psi.. i am still hesitant at driving at 25, so i will deal with whatever wobble i have left at 28.
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Burning Brakes
Joined: Apr 2003
Posts: 789
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From: BF Egypt Tx
Re: BFG DR Problem Please help (Cobra Skinner)
I guess it should be mentioned, that although you can drive on the street with those DR's, they're usually considered to be a tire that is used at the track, and then switch back to more of a road handling tire, KD's, or Nitto Extremes for the street when you return. :eek: Just a thought. ;)
Thread Starter
Instructor
Joined: Apr 2002
Posts: 139
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From: Palatine IL
Re: BFG DR Problem Please help (bglmn)
I know I know guys.. with time I'll get used to it... The passengers in my car though will be poopin' a brick lol... A 50k car that wobbles outstanding... Anyways will the tire blow at 28 psi for a 200 mile trip? Is it risky and stuff? Still haven't gotten that answered
Le Mans Master
Joined: Jul 1999
Posts: 5,005
Likes: 38
From: jackson nj
Re: BFG DR Problem Please help (Cobra Skinner)
This is the same problem that "Mikie C" had when replacing his 315/17 with 315/18's. The sidewall seems to be softer for better "reaction" on the starting line at the track, but you will get the "sway" with it. There is no known correction for it, it is something that you will have to get used to. It's almost easier to race on ET Streets then on these new 18" tires....but they do hook at the track....it may be an "undesireable" trait for them.
Resident moron
Joined: Jun 2003
Posts: 4,746
Likes: 20
From: Assachusetts
Re: BFG DR Problem Please help (Cobra Skinner)
I do 100 mile round trips to my track at 25psi or less, never a problem. Remember, as they heat up the pressure with rise anyway. I'd start with 25 cold.
Dope
Dope
Melting Slicks
Joined: Apr 2001
Posts: 2,909
Likes: 1
From: Highland Village TX
Re: BFG DR Problem Please help (SvenOdin)
I have the same ones and drive all the time on them. I put 25-27 in the rears. At 25 your low pressure sensor won't go off all the time.
Mine isn't a daily driver and I have a mean TC 3600 2.5 str. I like these tires and don't notice much float in just regular driving and so far I have pulled a 1.70 60' and a 7.58 at the track.
The Bandit.......... :cheers:
Mine isn't a daily driver and I have a mean TC 3600 2.5 str. I like these tires and don't notice much float in just regular driving and so far I have pulled a 1.70 60' and a 7.58 at the track.
The Bandit.......... :cheers:
Team Owner
Joined: Apr 2001
Posts: 26,794
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From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
Re: BFG DR Problem Please help (SvenOdin)
Was 28psi cold or after they fully warmed up?
Also BANDIT,
When you say 25 to 27, i assume your mean cold tire pressure?
[Modified by MTI 427 Roadster, 3:54 PM 10/8/2003]
Also BANDIT,
When you say 25 to 27, i assume your mean cold tire pressure?
[Modified by MTI 427 Roadster, 3:54 PM 10/8/2003]
Melting Slicks
Joined: Dec 2001
Posts: 2,877
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From: Texas
Re: BFG DR Problem Please help (MTI 427 Roadster)
Was 28psi cold or after they fully warmed up?
Never saw them get higher than 30 except when I made my trip to Houston. Got up to 32psi then, but wasn't a problem as IH-10 from S.A. to Houston is mostly flat and straight!
[Modified by SvenOdin, 4:16 PM 10/8/2003]
Melting Slicks
Joined: Apr 2001
Posts: 2,909
Likes: 1
From: Highland Village TX
Re: BFG DR Problem Please help (SvenOdin)
Mine is 25, 26 in the rear after they are warmed up! these are really soft and if you over fill them they will not last as long. They will only last (so I am told) about 5K depending on how much you go to the track.
Thanks
Gary :D
Thanks
Gary :D
Thread Starter
Instructor
Joined: Apr 2002
Posts: 139
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From: Palatine IL
Re: BFG DR Problem Please help (BlackSun!)
Awesome guys thats alot.. I'm going to put 25 psi in them cold and they'll warm up on the drive hopefully less wobble will occur :hurray: