What size tire?

enquiring minds want to know......

 

225/40/17 I nearly blew a tire out and had some old hand me downs laying around. threw them on, didnt want to go to the track with them, but well i did. On top of that i let a bunch of air out of them (were about 19 psi) so not only were the rims like touching the cement, but the front bumper was only like 2 inches off the ground now

I did what i had to do, and i couldnt resist the track even till i got the new rubbers, but was not in a hurry, because im parking the car in like 3 weeks or so anyways.

 

so a 225 versus a 235 makes you lose that many mph? that's pretty interesting. did not know that.

if you put 285's on the car, would it make it go faster?

 

Not if you keep the over all tire height the same. Mine is not.

 

Yeah that would be like 95% of the rolling diameter of the original tire... how high do you have your redline set?

 

Does anyone local have an X MR?

 

I think its 8100 give or take


Here are some numbers.

Stock 235/45/17 are 25.33" tall and 9.25" wide
mine 225/40/17 are 24.09" tall and 8.86" wide

Others:
255/40/17 are 25.03" tall and 10.04" wide
265/40/17 are 25.35" tall and 10.43" wide (closest to stock it appears)
285/35/17 are 24.85" tall and 11.22" wide

shorter tire = better accell but hits limiter through traps, and kills MPH vs a taller tire that has less accel and higher mph.

I just looked at a different slip from july and i picked up 24.71 mph in the back half with 235/45/17 bald tires.

 

what was your trap speed?

 

115.71

 

What if I told you that an evo with the same mods as you minus cams and 2psi less boost can trap 116.45 and gain 29.1 mph on the back half in a headwind?

 

I would first say i dont care. Then i would say, hey joe denardo, what was the speed of the headwind and how much did it ACTUALLY ****ing effect the drag coefficient of the car?
Then finally i would say, congrats on having a gutted car..

Then i would say, way to sandbag it to the 1/8th mile then actually run it the rest of the way. Then I would say, sounds like this punk cant launch the car for ****.


My car is fast enough for the circumstances. Car is only pushing 24 psi, and runs 11's all day. its making somewhere around 375whp on 93 octane at 24 psi... I just ordered new TB seals so im sure that will fix the extremely obnoxious boost leak coming from the throttle body...

so lets see some slips and some videos..


soo overall i say, i dont care.

 

oh, and I am thinking about stoping about 2 feet before the 1/8th mile marker next time im at the track.. I bet i pick up lets say.... 91 mph? holy **** that would be sick...

Start looking into evos and drag racing, say the drag racing threads...

AVERAGE evos pick up from 22 to 25 mph on the back 1/8th

IndyEVO just did 22.47 on his evo and another guy ran 25.24 mph in the back....

Start looking stuff up before you go saying things like "what if i said" because you look kinda dumb

 

what if i said.....

my car is in a magazine B1TCH.

 

id say who ****ing cares, my girlfriend is in a magazine

ps. are you serious about your ride being in a magazine? congrats are in order! ive seen it at prp. no disrespect because its a monster at the track, but there was like duct tape and **** holding parts of your ride together so what magazine?

 

hahahahhahaha

And I'd say if you aint breakin you aint racin