Fitment Factory 20x13

W.O.W. 370Z

What number were you looking for?

m4a1mustang

435whp, granted the Mustang dynos tend to read low. That's probably 450-465 on a Dynojet.

How much rear camber are you running?

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W.O.W. 370Z

435whp on a mustang dyno on my 7AT is not 450-465 on a dynojet.


Camber with the 295/30/20 is 2.6.

m4a1mustang

What would you say it is, then?

-2.6 on your old stretched tires definitely explains a lack of traction. Hopefully the new setup helps you.

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W.O.W. 370Z

There is no calculation to it or science to it to convert numbers between dynos and you know this.

I am going to go on a dynojet soon and find out.

I am more than happy with what it is putting down considering it is a 7AT.

m4a1mustang

I know that, which is why I said "probably" and gave a 450-465 range on the average DynoJet.

Mainly because someone said your numbers read low, I wanted to point out that Mustang dynos typically do... it wasn't a knock at you or your car at all...

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W.O.W. 370Z

I know.

But seems like so many people get wrapped up in a "number" to attach to a car. Any dyno can be calibrated to read whatever. The dyno is a tool not the "end all be all" for indicators of performance on the street.

djpathfinder

No wonder. Need to be as perpendicular as possible for maximal traction. Hopefully you can achieve that despite a 13" width wheel with (likely) very aggressive offset. You should have all the traction you need with 345 tires, otherwise easy on pedal to the metal. Have you considered an aftermarket traction control unit?

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W.O.W. 370Z

My offsets are actually very tame

The car is my daily so I rather just be easy on the pedal as you suggested.

Jeffblue

that and the lack of sidewall. I think part of why i can grip with similar HP and a narrower tire is that i'm on 17" tires with a 45% profile, you are on 20's with 30% profile.

have any ideas for what kind of track setup you'll run? or do you not plan to do that?

m4a1mustang

That's what I meant. With -2.6 degrees of camber and a 30 profile tire stretched across the rim, he had barely any contact patch.

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W.O.W. 370Z

Once I get squared away with the new ISS Forged set, I will start on finding a nice set for the track.

Any suggestions as a starting point?

Jeffblue

for 1/4 mile or for road course?

if you are going to just do 1/4 mile i'd get some 18x10.5+15 Enkei rpf01's with drag radials for the back and call it a day. really cheap, good wheels, very light. No real need to get all four wheels for drag racing unless you are really concerned about unsprung weight on the front wheels. theres something badass about mismatched front/rear wheels on a car at a drag strip.