370z MEATY TIRE THREAD

[jofro6]

Thanks for all the info guys. Definitely understand all the math parts (my major) you were explaining with per inch weight distribution and the understear. The only thing i dont grasp is the loss in length by going wider that you mentioned? maybe i just havent been awake long enough yet to see it though lol

edit: nevermind now i got it lol obvi the less per inch pressure doesnt cause the tire to flatten out as much shortening the contact patch.

[VinceThe1]

Originally Posted by jofro6

Thanks for all the info guys. Definitely understand all the math parts (my major) you were explaining with per inch weight distribution and the understear. The only thing i dont grasp is the loss in length by going wider that you mentioned? maybe i just havent been awake long enough yet to see it though lol

edit: nevermind now i got it lol obvi the less per inch pressure doesnt cause the tire to flatten out as much shortening the contact patch.

Exactly, so it really seems that there is no advantage to going with a wider tire, or a bigger wheel/lower profile tire setup, even tests proove that all they really do is add more weight...thus making the car slower and less fuel efficient.

However, the difference isn't really big and most of us do it for the look/stance of the car. The other advantage though is that because you have a wider tire, it has more surface area, so you need less pressure in your tire to hold the weight of the car vs a skinny tire, so you can run at 30-34psi instead of 35-38 like some do, and that will give you a larger contact patch with the road because the tire will flatten out better, which is good for saving your tire under wheelspin and overall wear...because less weight per square inch = less stress / less heat and overall less wear on the tire compound, it would also help on the track, since the wider tire would build heat slower than a skinny one, giving you overall better traction after a few laps, since the skinnier tire would already be overheating and possibly disintegrating, while the wide tire would last much longer under similar conditions, and wear less over time too.

[VinceThe1]

Attatched are two Images, the contact patch markings seen occured on my driveway after it rained.

These are from when I had my stock sized tires on my Nismo wheels, 245/40R19 front and 285/35R19 rear.

As you can see, the narrower front 245 tire has less width, but more length so that it looks more square.

The wider rear 285 tire has more width, but less length as it doesn't flatten as far due to the larger surface area it has it support it's given weight, and therefore looks like a rectangle. (granted, there is more weight on the front tires than the rears but I also run a few more psi in the front. I usually have them rear 34psi, front 36-37psi. Also, the car was on an uphill driveway with a small degree/angle, so there is a little more weight on the rear tires, and a little less weight on the front tires than usual)

[gussyturbo z]

IMG_3445.jpgIs this meaty enough? MT slicks on the rear and runners in the front.

[FPenvy]

Originally Posted by gussyturbo z

Attachment 95441Is this meaty enough? MT slicks on the rear and runners in the front.

i want them lol

[gussyturbo z]

Originally Posted by FPenvy

i want them lol

Man they hook up pretty nasty too!!

[FPenvy]

Originally Posted by gussyturbo z

Man they hook up pretty nasty too!!

im guessing base rear brakes though

[Rusty]

Originally Posted by gussyturbo z

Attachment 95441Is this meaty enough? MT slicks on the rear and runners in the front.

Nice, but think you have to do something about the wheel lugs though.

[gussyturbo z]

Originally Posted by Rusty

Nice, but think you have to do something about the wheel lugs though.

Yea that's an old pic I have it studs now.

[VinceThe1]

Originally Posted by gussyturbo z

Attachment 95441Is this meaty enough? MT slicks on the rear and runners in the front.

Well how wide are they?

[gussyturbo z]

Originally Posted by VinceThe1

Well how wide are they?

They are a 10 inch in width.

[VinceThe1]

Originally Posted by gussyturbo z

They are a 10 inch in width.

So ideally that should translate into a 255 tire, but tires are never exact this one's probably wider.