1/4 mile question.

[Tyler]

Ok i have a question regarding the 1/4 track. Is it better to have wider tires on the car or narrow? Anyone have a clue on this?

[GDB]

wide on the drive wheels, narrow on the others

But you don't want to go any wider than you need to get traction.

Taller, squishier sidewalls also help.

[Tyler]

Hmm i heard the complete opposite on another site.
I'm hearing wider on the rear gives you a better launch and you have more traction and you want smaller tires up front. My friend wanted me to post this cause we are heading up the the track in NH shortly.

[DustenT]

Originally Posted by GDB

wide on the drive wheels, narrow on the back.

This would be true for a FWD car.

If you don't have a problem with traction, it's pointless to run larger wheels in the rear. I have 225 in the rear and never have a problem with traction. I can launch at 3500rpms and hook up.

Invest in better tires, not wider rims.

[Tyler]

I'm not taking my car, i'm going with my friend who has an o1 gt,i'll list his mods since i'm bored at the moment. Off road X pipe no cats,magnaflow magnapacks cat back,fuel injected cai,underdrive pulleys,70mm throttle body,bigger intake elbow and the rims which are 17x10.5r and 17x9.5f. gt stock was 285hp and i'm guessing with the mods it's 365hp. Also a friends taking his sisters new wrx sti which has about 700-750hp,which i haven't seen yet. I'm taking my camera so hopefully i can post a couple pics over the weekend.

[DustenT]

Originally Posted by Tyler

I'm not taking my car, i'm going with my friend who has an o1 gt,i'll list his mods since i'm bored at the moment. Off road X pipe no cats,magnaflow magnapacks cat back,fuel injected cai,underdrive pulleys,70mm throttle body,bigger intake elbow and the rims which are 17x10.5r and 17x9.5f. gt stock was 285hp and i'm guessing with the mods it's 365hp. Also a friends taking his sisters new wrx sti which has about 700-750hp,which i haven't seen yet. I'm taking my camera so hopefully i can post a couple pics over the weekend.

I'm guessing if your friends have 365hp and 700hp cars they know what size tires they should be running.

[Tyler]

Originally Posted by DustenT

I'm guessing if your friends have 365hp and 700hp cars they know what size tires they should be running.

You do have a point there but i can speak for my friend with his gt this will be his second time ever taking his car on the track,1st time hid did just with the cat back exhaust so he's done some good modding since then. The kid with the sti thinks he knows everything about cars but he doesn't. Anyway whatever i'm off to the track.

[DustenT]

Originally Posted by Tyler

You do have a point there but i can speak for my friend with his gt this will be his second time ever taking his car on the track,1st time hid did just with the cat back exhaust so he's done some good modding since then. The kid with the sti thinks he knows everything about cars but he doesn't. Anyway whatever i'm off to the track.

Video of 700hp STi or BAN!

Edit: I'll host the video for you.

[shaggy318ti]

700 hp out of an STI? sounds impressive, especially that is only a turbo four cyl. Not saying it isnt true, but it would definiately be cool to see some pictures or a video of it!

[DustenT]

Originally Posted by shaggy318

700 hp out of an STI? sounds impressive, especially that is only a turbo four cyl. Not saying it isnt true, but it would definiately be cool to see some pictures or a video of it!

I think 700hp would involve using the new version 9 motor ($15k alone) running a huge turbo, a ton of imported ProDrive parts and probably Nitrous.

500hp is easy, it's that extra couple 100 hp that gets REALLY pricey. Proof of 700hp please!

[S10mafia50]

Originally Posted by DustenT

If you don't have a problem with traction, it's pointless to run larger wheels in the rear. I have 225 in the rear and never have a problem with traction. I can launch at 3500rpms and hook up.
.

What kind of tire do you run, AlaskaBlue has prolly the biggest pain in the A$$ time launching at the track....lol.
Andrew

[AlaskaBlue]

That is probably true. My best run was a 15.9 with massive wheel spin in first and part of second. This was with a set of 215 toyos and set of 215 pirellis.

Part of it may be cause by the stiff suspension, bad track prep, bad driving, low weight, a lot of neg camber and the flywheel just made the problem worse. It seemed like no matter what I did or what rpms I would either bog really bad or just spin like crazy. This was with the slipping clutch technique. My traps were close to 90 mph. This is also at about 2500 feet elevation.

I'm going back with less camber and 235/40 st-615s or ZX212s to see if I can get into mid to low 15s. The car will also be about 100-150 pounds lighter than last time.

[GDB]

Sorry, I had a typo in my first post. As for the stang, first he's not making anywhere near that much (I know people with much more with much more work done on Mod motors and they aren't pulling that much at the rear wheels). Second, tell him to get a set of hoosiers on some 15" wheels for the rear and call it a day.

[DustenT]

Originally Posted by GDB

Sorry, I had a typo in my first post. As for the stang, first he's not making anywhere near that much (I know people with much more with much more work done on Mod motors and they aren't pulling that much at the rear wheels). Second, tell him to get a set of hoosiers on some 15" wheels for the rear and call it a day.

Hoosiers will destroy a cars transmission. Some spin is necessary if your entire drivetrain isn't able to handle a solid launch.

Alaska - Get the Azenis 615s or the Kumho MXs. These are incredible. I only paid $80/each for the MXs from a guy on ebay, brand new.

[HuGo]

i got federal tires, are they any good? i was gonna get toyo but i went with federal.