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It’s simple shorter tires rotate faster with a higher rpm and cover less distance, taller tires does the opposite, you cover more distance with a taller tires at the same rpm. So once your hooked tire height has a lot to do with it. Thats why drag cars have tall wide tires, it is a well known...

Currently running ecs02’s, if I go 305’s I would have to move to mpss’s, both tires are about as sticky uhp summer tires as you can get without going drag radial (which I am not going to do). I can easily launch with the 275/35’s without blowing them off, I guess the real question is what tire...

I’m looking at going from a 275/35r20 to either a 295/35r20 28” or a 305/35r19 27.4”, that is the question. The 295 is wider and taller, the 305 is just wider, but .2” shorter.

I appreciate the response, but that was not my question. I already have irs alignment, braces, 800/200 lb springs. The question was about tire height and width, because it does make a significant difference and obviously drag radials would improve some, but this will remain a street car in FL...

Yes, this is a street car that occasionally hits a fairly well prepped track.

What 60’ - 330’ is anyone getting with a uhp 28” tire 295/35r20 and/or 27.4” tire 305/35r19 with an n/a bolt on, roughy 500 whp, 10r80 with 3.15’s. Both tires super pilot sports. I am not looking for a drag radial. I have run the low 12’s with 275/35r20’s, just sick of pedaling thru the 330’...

This happened to me when I first bought my ride, I accidentally programmed one key to valet mode and it reduced my power and restricted ALL Track Apps, it can be reverted as long as you have 2 fobs. Worth checking into. Also, if lane assist is on it will do the same thing.

Try launching at 1800 rpm’s in track mode with advance trac off, and roll into the pedal slow enough to prevent tire slippage and you should be to the floor after the 330’, so far that has produced the best result for me. Without at least drag radials, drag mode is useless because of the violent...

I think most of the Injen cai’s have inserts (more restrictive) to accommodate the factory tune, if this one does, was it removed prior to tuning?

Several others have mentioned tire height and weight which are both proven factors, but you have also increased your rolling resistance with much wider tires in front and rear. Due to the large amount you have increased your rear tire height, I would highly recommend to change your tire height...

They only make the TSW Bathurst up to a 10” wheel, maybe I’ll suck it up and buy the 10” and slap some 295’s on there 🤪

Currently I am 275/35r20 squared, but would like to go 285/35 rear and 265/35 front just for slightly better traction in rear, cut some weight and rolling resistance in front and add a slight rake for aero reasons. I have had 2 cars with 305/30's but don't like how they corner etc. When I bought...

One thing to consider besides tires as Juggernaut mentioned, is a stiffer rear sway bar. I have read and spoken to a friend of mine who used to race professionally in NHRA and he said it will make a noticeable difference in rear traction. This is something I am considering as well.

Anyone??? even a 275/35r20 and 255/35r20? I am just trying to figure out how this staggered setup rides? handles? corners? launches?

Thank you for your response, I can change the tire diameter in my tune for the speedo 👍

Is anyone running 285/35r20 and 265/35r20 staggered on their rides, I am currently running 275/35r20 squared and considering going to a staggered setup on 9.5" wheels for better traction and less weight and tramlining up front. I currently run ECS02's for tires and most likely will stay with...

I do not have a Mach 1, but I do have steeda tune on my GT premium and it is a great tune, big difference in throttle response (no more pedal lag), and the shift points are much better with the 10r80, the car runs much better than the factory tune.

You still have to tune for a larger maf if the maf increased? Just trying to help brother, I think JLT makes CAI’s with 2 different maf sizes. My point was that is exactly how my car acted with a larger maf without the tune downloaded.

My grill intake is fully open with a 114mm and tuned for the maf and it runs great, but during the tune download my battery was weak and didn’t realize it, thought tune downloaded, but it didn’t and it bucked and popped, called tuner and he made me realize tune did not download, did again hooked...

I would agree, if the battery is not fully charged during retune this will cause issues. Been there done that!