Re: Tire pressure suggestions 18" rim Falken 615K rubber?
[Re: brads70]
#1642901
07/06/14 04:34 PM
07/06/14 04:34 PM
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Joined: Jun 2007
Posts: 2,432
NorCal
RylisPro
top fuel
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top fuel
Joined: Jun 2007
Posts: 2,432
NorCal
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Quote:
Any suggestions for air pressures?
295/40/18 rear
315/30/18 front
Suggestions for regular street driving and autocross would be helpful!
Thanks Brad
Wow you run a reversed staggered setup?
Haha!
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Re: Tire pressure suggestions 18" rim Falken 615K rubber?
[Re: RylisPro]
#1642902
07/06/14 05:47 PM
07/06/14 05:47 PM
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Joined: Dec 2010
Posts: 12,375
SoCal
MuuMuu101
I got lucky at Woodward!
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I got lucky at Woodward!
Joined: Dec 2010
Posts: 12,375
SoCal
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Quote:
Quote:
Any suggestions for air pressures?
295/40/18 rear
315/30/18 front
Suggestions for regular street driving and autocross would be helpful!
Thanks Brad
Wow you run a reversed staggered setup?
Haha!
Technically since most the weight is in the front, it technically should help a little. 
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Re: Tire pressure suggestions 18" rim Falken 615K rubber?
[Re: MuuMuu101]
#1642903
07/06/14 09:27 PM
07/06/14 09:27 PM
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Joined: Jan 2009
Posts: 813
Ontario,Canada
brads70
OP
super stock
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OP
super stock
Joined: Jan 2009
Posts: 813
Ontario,Canada
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Quote:
Quote:
Quote:
Any suggestions for air pressures?
295/40/18 rear
315/30/18 front
Suggestions for regular street driving and autocross would be helpful!
Thanks Brad
Wow you run a reversed staggered setup?
Haha!
Technically since most the weight is in the front, it technically should help a little.
 that's the idea..... car pushes when tires got hot. The other issue ( well... another issue lets say) is in stock form the track width is wider in the rear, hence the push.... fixed that too.
Any idea on what pressures to run? 
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Re: Tire pressure suggestions 18" rim Falken 615K rubber?
[Re: Tomswheels]
#1642905
07/07/14 01:10 AM
07/07/14 01:10 AM
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Joined: Jan 2009
Posts: 813
Ontario,Canada
brads70
OP
super stock
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OP
super stock
Joined: Jan 2009
Posts: 813
Ontario,Canada
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Quote:
The sidewalls on the 615k are pretty stiff, they can be run at fairly low pressure. I run 32 psi all around on street, 30 front 28 rear for autocross. Some of my competitors on them run as low as 26 F 22R.... 
Thanks for the reply. I was under the impression for autocross people added more air pressure.
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Re: Tire pressure suggestions 18" rim Falken 615K rubber?
[Re: BigBlockMopar]
#1642908
07/07/14 10:43 PM
07/07/14 10:43 PM
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Joined: Oct 2013
Posts: 380
Escondido CA USA
Tomswheels
enthusiast
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enthusiast
Joined: Oct 2013
Posts: 380
Escondido CA USA
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You are correct most tires need higher pressure for Autocross so the sidewalls don't roll over. I ran the Dunlop Z2 and they liked a bit more pressure, 38F and 36R. Lighter cars like Miatas always seem to like more pressure than heavy cars like ours. The pressures I use on the 615K are cold pressures, again with the 615 K you don't get huge pressure increases as the tire doesn't get overheated by falling over on itself. It's a very stable, planted tire in the corners and the pressure after most Autocross runs in my Valiant is rarely up more than 1 or 2 psi. Any more pressure increase than that and you're over driving...
Last edited by Tomswheels; 07/08/14 06:42 PM.
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Re: Tire pressure suggestions 18" rim Falken 615K rubber?
[Re: brads70]
#1642910
07/21/14 04:50 PM
07/21/14 04:50 PM
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Joined: Jul 2004
Posts: 805
San Francisco Bay Area
MrAngry
super stock
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super stock
Joined: Jul 2004
Posts: 805
San Francisco Bay Area
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Hey Brad - I run 615k's on my Mustang for road course duty - 315 squared set up. I start them out at 24 psi as hot temps climb to 34. For Auto-X you may want to start a bit higher though - maybe 25/26. Just my
Never trust a pretty girl... or a lonely midget.
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Re: Tire pressure suggestions 18" rim Falken 615K rubber?
[Re: MrAngry]
#1642914
07/22/14 07:27 PM
07/22/14 07:27 PM
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Joined: Jan 2009
Posts: 813
Ontario,Canada
brads70
OP
super stock
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OP
super stock
Joined: Jan 2009
Posts: 813
Ontario,Canada
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Quote:
That's a bad ass car right there...
Thanks guys those fenders were a TON of work. I was expecting a lot of negative comments online and at Carlisle but nothing but positive remarks/questions. Mopar folks tend to lean on the purist side but so far so good. Not that it matters much. I like to do my own thing. I have the original fenders stored away in case I ever want to go back.
At Carlisle , Mopar Muscle asked to take pictures of it for their magazine, filled out a info sheet too. Cool stuff I thought!
Here is a few pictures of how I made them...
Bought an English wheel, never used on before?
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Re: Tire pressure suggestions 18" rim Falken 615K rubber?
[Re: PHJ426]
#1642917
07/27/14 11:40 AM
07/27/14 11:40 AM
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Joined: Jan 2009
Posts: 813
Ontario,Canada
brads70
OP
super stock
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OP
super stock
Joined: Jan 2009
Posts: 813
Ontario,Canada
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Quote:
That looks great! I take it those are repop fenders that got the treatment? You might start a trend and be selling some 315 series front fenders for Challengers here.
What manufacturer for the 18" mini lite style wheels there?
Thanks, I expected to get almost run off this site doing this.  Yes I bought new AMD fenders to cut up and stored my originals.
These are the rims... http://www.etwheels.com/lt_iii.html
With the hours involved... I don't think it would be a feasible venture making them! 
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Re: Tire pressure suggestions 18" rim Falken 615K rubber?
[Re: PHJ426]
#1642919
07/27/14 02:33 PM
07/27/14 02:33 PM
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Joined: Jan 2009
Posts: 813
Ontario,Canada
brads70
OP
super stock
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OP
super stock
Joined: Jan 2009
Posts: 813
Ontario,Canada
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Quote:
I hear that Brad.....the cornering section appears to be a bit more forgiving on modifications.
So how does the car feel with the 315/295 combo? I forgot your t/bar spring/swagger/shock setup.
I have 1.120" t bars , 225 composite leafs, and double adjustable QA1's on all 4 corners.
Car is great I expected a horrible ride on the streets but it's not bad. The only negative issue is roads with ruts from transport trucks etc.... it follows the ruts pretty good. I got caught in a pretty good rain storm driving home from Carlisle ( 8 hour drive) and was having visions of having to grab a motel room but it was just fine , no hydroplaning at all. Slow manoeuvring like when parking is not an issue at all either! I have power steering with the fast ratio arms.
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