Lateral acceleration

[FivepointOHYEAH]

the front is where the weight is, so 275s on damn sticky tires seem like they will hold up to alot. But youre right I may just upgrade to 275's in the front like nt05r or something in a 20.

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[Chameleon]

Toyo R888's.

 

[FivepointOHYEAH]

Toyo R888's.

they only got those in 285/35/20 so Do I put those on the front and have wider than rears or put my mickeys in the front and these in the rear? or wait over a year and get all 4

 

[BMR Tech]

Better tire is my vote. I am not a fan of the MT Street Comps, personally.

Look into Michelin Pilot Super Sports. Those are legit tires!

 

[FivepointOHYEAH]

Better tire is my vote. I am not a fan of the MT Street Comps, personally.

Look into Michelin Pilot Super Sports. Those are legit tires!

I did, almost bought them but mickeys were cheap and damn they really do not like to break loose as easily as before. But i guess there is a reason why those Super sports are so popular

 

[Whiskey11]

Well.... tires are BY FAR the easiest way to improve grip. If you don't care about the way the wheels look, Late Model Restoration sells 19x9.5 wide SVE Drifts for $170 each. They weigh like 24-26 lbs and are a strong wheel for what they are. Throw on a set of RE71R's or Rival-S and those lateral G numbers will climb to probably in the 1.15-1.25 range. Add in a more aggressive alignment all around and you'll get higher numbers. Lower the CG, you'll get higher numbers. Reduce weight and you'll get higher numbers.

Pretty much, that's the order things need to be in from most important to least important.

 

[FivepointOHYEAH]

Well.... tires are BY FAR the easiest way to improve grip. If you don't care about the way the wheels look, Late Model Restoration sells 19x9.5 wide SVE Drifts for $170 each. They weigh like 24-26 lbs and are a strong wheel for what they are. Throw on a set of RE71R's or Rival-S and those lateral G numbers will climb to probably in the 1.15-1.25 range. Add in a more aggressive alignment all around and you'll get higher numbers. Lower the CG, you'll get higher numbers. Reduce weight and you'll get higher numbers.

Pretty much, that's the order things need to be in from most important to least important.

shit really? that combo can really help that much? what size do you reccommend?

 

[Whiskey11]

shit really? that combo can really help that much? what size do you reccommend?

Tire compound and construction is EVERYTHING. At the end of the day everything you do in your car is delivered through your tires so yes, your tires mean that much. Street tires have come a long way and the Extreme Summer Tires are about to the point of yesteryear's R-Comps without the wear and heat cycle issues.

If ultimate dry grip is your desire and wear and road noise and road harshness are minor concerns, then any of the top crop of Extreme Summer Tires are going to suit your fancy. BFG Rival-S and Bridgestone RE71R are the two best tires at the moment. The RE71R has a 285/35/19 and a 275/35/19.

 

[theman]

totally agree with Whiskey... Those SVE wheels look good to go along with the best bang for buck. Pair them with either the 285/35/19 Goodyear F1 Supercar, bridgestone potenza s04, or even the BFG gforce sport comp2 will get you a very nice setup for ~$1600 which you could get most back out of selling the gear you have.

You can spend a tad more, weigh a tiny bit less at 24.45 lbs per wheel, and have dubs in the 20x10 TSW intarlagos or nurburgring wheels at discounttiredirect. Pair them with something like the 285/35/20 goodyear eagle f1 supercar for under $2800

that sorts out your contact patch the correct way with a square setup for neutral-ness... I also agree dropping your CG an inch would help get your goal...with something like the steeda linear rate ultralight springs, with their rear sway bar would probably get you the rest of the way there. But locking down the rear IRS with the BMR or Steeda inexpensive mods would really stabilize and settle it down to come close to that buddy's G level.

 

[Norm Peterson]

I got big ole 20's. After a ton of research people seem to recommend mickeys but that changes in every thread But i guess the consensus is just upgrade rubber? I figured as much since i barely have any body roll as it is.

Cliff's Notes version - tires (grippier and wider) on wider wheels, then whatever else it takes to make and keep them happy (suspension & alignment).

For true street duty, you probably don't want a tire diameter less than about wheel diameter + 7.5" (which is already pushing it) or any greater than wheel diameter + 9".

I'm pretty sure that those Mickeys are rebranded from something else, and that they aren't going to be a match for Michelin Pilot Super Sports or Goodyear Supercar G:2's . . . let alone any of the tires favored for street category autocrossing (Hankook RS3, BFG Rival, Bridgestone RE71R, maybe even Falken RT615's). This list is just off the top of my head and I'm probably leaving out a few.


Norm

 

[Whiskey11]

shit really? that combo can really help that much? what size do you reccommend?

Well... Relevant info: This weekend I autocrossed my Stock GT PP for the first time. Stock alignment (yuck.... yuck... yuck...) stock bars, the whole nine. Only change from stock was a set of SVE Drifts (19x9.5) and 275/35/19 RE71R's. Lateral G accel, highest number saw was 1.19g, highest braking was 1.08g, highest accel was only .78g.

Stock car is unbelievably hard on the front tires and pushes like crazy. With a little more balanced set up I could see slightly higher lateral numbers... possibly 1.2g to 1.25g with RE71R's.

So yes, Tires DO make a difference, a big one!

 

[DickR]

Well... Relevant info: This weekend I autocrossed my Stock GT PP for the first time. Stock alignment (yuck.... yuck... yuck...) stock bars, the whole nine. Only change from stock was a set of SVE Drifts (19x9.5) and 275/35/19 RE71R's. Lateral G accel, highest number saw was 1.19g, highest braking was 1.08g, highest accel was only .78g.

Stock car is unbelievably hard on the front tires and pushes like crazy. With a little more balanced set up I could see slightly higher lateral numbers... possibly 1.2g to 1.25g with RE71R's.

So yes, Tires DO make a difference, a big one!

FYI from another 2015 Mustang autocrosser who has been autocrossing mine since early Spring: The push Chris talked about becomes minor with the front camber increase described in the FSM that the SCCA street class rules permit. Addition of a slightly stiffer rear bar such as the Strano 7/8 solid balances the car even better. The rear of the 2015 GT with the RE-71R's is probably much better in many situations than most of us would believe until experienced.

My first set of RE-71R's actually has more front tread and only a little more outside shoulder wear than the rears after 150 autocross runs and 6K street miles. The tires have not been rotated front to rear or "flipped" on the wheels to move the outside edges to the insides.

Chris and I get to compete in 2 weeks when I drive all the way to Nebraska where he lives from my home in NC so that we can compare our Ruby Red Mustangs at the SCCA Solo National Championships.

 

[FivepointOHYEAH]

Well... Relevant info: This weekend I autocrossed my Stock GT PP for the first time. Stock alignment (yuck.... yuck... yuck...) stock bars, the whole nine. Only change from stock was a set of SVE Drifts (19x9.5) and 275/35/19 RE71R's. Lateral G accel, highest number saw was 1.19g, highest braking was 1.08g, highest accel was only .78g.

Stock car is unbelievably hard on the front tires and pushes like crazy. With a little more balanced set up I could see slightly higher lateral numbers... possibly 1.2g to 1.25g with RE71R's.

So yes, Tires DO make a difference, a big one!

Thanks for that, and that is awesome to know, I had no idea these cars with the right grip could handle 1.2G's, Everytime I hit anything over 1 im holding on to the steering wheel to keep my head from hitting the window lol. After reading this i want to get 19inch rims and 4 new tires. Too bad i have to wait for these to wear out a bit so my Fiance doesnt get anymore mad at my monthly spending habits....For reference my Mickey Thompson street comp 275/35/20 rear and 265/35/20 P-zero fronts do 1.04G's laterally .81 accelerating(hit that once......(.7-.75) more consistent) and somehow 1.11 decelerating(consistently) This was not in an autocross event but spirited driving.

 

[theman]

this will just be a good test of her... might as well push those spending button limits now while you're still in the engaged zone before seeing how that goes in the marriage zone. ;)

like suggested, you'll get a tad more return on selling your current gear while it's still in good shape as apposed to when the tires are worn out... you will have to buy the new stuff to replace it before selling off the current stuff no matter how long you wait, but the current stuff is worth more the earlier and better condition you sell it in. So you're actually saving more $$ doing it now... and you better learn these logic maneuvers well young Padawan, to keep many years together post-nuptials too!

 

[Whiskey11]

Chris and I get to compete in 2 weeks when I drive all the way to Nebraska where he lives from my home in NC so that we can compare our Ruby Red Mustangs at the SCCA Solo National Championships.

It can't get here soon enough... I need a vacation!

I'm just hoping those swaybars come in so I can throw the rear bar on before nationals! You'll be better prepared than I will be though with those pimpy shocks!

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