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Racing series use spec tires so Ford should on their street cars when every manufacturer from GM to Porsche to Ferrari, McLaren, Mercedes, BMW, etc... All work with tire companies to make custom tires for specific performance model road cars. Ya, makes sense to me :facepalm: No one said these...

Why be mediocre across 3 off the shelf tires when they can engineer the tires specifically for the car and the cars setup for the tires to deliver far better lap times than trying to come up with a setup that is okay for various tires? GM has custom Goodyear's for the Camaros and Chester...

Because the suspension is setup for those custom tires, and that's why Porsche and Ford and most manufacturers of these track cars strongly recommend oem replacement tires and not replace them with "universal parts bin tires". If you want a "spec tire", then you need different alignments...

I don't think a 305 designed for a rear-engine Porsche will have anywhere near the same design or construction as a front heavy Mustang. These tires are so trick, putting mustang tires on a Porsche advantages the mustang, and vice versa. Even putting a third party tire on both cars will still...

Because these factory equipped tires are custom made for the car, and not just off the shelf cup 2 or PS4S.

What level is that when C&D guys are 3+ seconds off GMs factory drivers.

Drivers margin of error is 5-15 seconds or more. A pro can probably drive an Ecoboost faster than the majority can drive a gt500.

Aerodynamics don't care how much the car weighs. The GT4 wing was designed for the S550 Mustang body shape. So it is optimized for effectiveness and efficiency whether it's on an Ecoboost, gt500 or gt4. If you added a massive wing on the back, you would need more aero up front to balance the...

What's the point of this?

14 gallons (2 gallons in the car) = 87lbs 4080 + 87 = 4,167lbs

I guess the GT4 wing doesn't make a difference. Maybe the race teams should use the base spoiler :crackup: iirc, the carbon wheels are worth about 1 second per lap.

It was. 686whp SAE. But everyone likes bragging about the higher STD correction factor :crazy:

"Shelby GT500 features the best Mustang track times, the best cornering and the largest brakes of any domestic sports coupe".

ChevyTrend seemed to love it. Called it a GT2RS, world class, one of the best sports cars in the world. I guess it doesn't suck if their reviews are praiseworthy.

"And around a racetrack, the Corvette wouldn’t have a chance. Not in speeds, laptimes, or handling behavior. I know, I've driven one." :rockon:

Or not a 2,000' elevation, uphill strip on a non prepped day that was either 85* or 65* with amateurs driving it with only a handful of runs. But I like to draw conclusive results from events like this too. :crackup:

That's comical that you don't read posts by the guy who developed the car and said the tire you want to put on, that you think will save your life, won't have any better wet performance. :crackup: It's your money and car. Whatever makes you sleep better at night. :thumbsup:

And you promote the stock PSS tires which have the same wet performance as the stock 19 Cup 2. See the irony?

I guess you didn't read a lot of the recent posts on this thread.

Those are GT350R cup 2s no less.