Andy13186

I got forgestar f14's and pilot super sports with 295 30 20's on the rear. Much better grip. I can launch at 1k rpm higher than the stock tires and not spin. I may try launching at 3300 rpm with these. Anywhere above 2k with stock tires id spin. Previous best run was 13.31@112 , i had trapped 115+ according to the program with the stock tires but this was the best time i ran before these new tires. Measured with dynolicious



2011 gt 6 speed manual , roush axlebacks


PREVIOUS BEST
NEW BEST With new mods Forgestar f14's and pilot supersport 295 30 20's on the rear

Settings : Rollout for speed tests 0"
Rollout for distance tests 12" (default, i think its the same as a track)
Trigger .10 g

New best with the new rims and tires, no other mods you can see max acceleration G forces are much higher at .79 on this new run. I think the low acceleration G forces on the original runs all resulted in a lower than expected hp estimation. 0-60 improved significantly , much less spin getting into 2nd. Also may have had a bit of tailwind on this run.

Program is very consistent, i had run at least 15 runs with this car, and at least 50 runs with my 2003 mustang gt(best with this car was 14.2@100 mph) and they were all similar.


Loving these new tires For some reason it still says my 60 foot is 2.3+ I think i need a track surface to break that, or i may try a higher rpm launch sometime soon.

Tires are .7 inch shorter than stock 245 45 19's.. same height as the brembo brake package tires though which lowers the gearing very slightly.

All my runs have been at the exact same location, elevation and surface type. Its a flat concrete surface bridge.



This is the fastest car ive driven, but i had a cbr1000rr which i hit 172mph on this bridge with, (the raised one going the other direction)

There are no twistys here but we have these 5+ mile straight and mostly flat bridges at sea level which at night have almost 0 traffic, so you can come to a complete stop and see if people are coming up behind you from miles away.

Andy13186

you all can see the difference in traction in the launch and at the top of 1st
original 0-40mph was 3.39 seconds,
new 0-40mph is 2.66, massive difference

As far as dynolicious accuracy, Im not sure if its 100% accurate, but i do think its a decent accelerometer and people have tested it at the track and the times it reports, and the timeslips match up almost exactly.

moosestang

If it's accurate, then your 60 foots are terrible! I say it's not accurate.

Andy13186

its consistent and i never would have been able to run this new time with the old tires. Its not a track prepped surface its a concrete bridge.

Heres a comparison of a dynolicious run at a track vs the timeslip (not my car obviously)



this one says max accelleration 1.54 G's though?^ The times match up pretty well but that G force is wrong on that one.

I did expect my 60 foot to be around 2.0



if i could get my 60 foot to below 2.0 , the 1/4 time would be pretty amazing for basically stock. Anyways im happy with the very significant improvement by just adding rims and tires, also this run was probably the fastest and most perfect shifting ive done so far and definatly felt like, and was my best run ever.

gburke1

It's probably not right. I would go to a real track and find out...

If those 60' times are right then you are spinning a lot more than you realize (even though you might not hear/feel it)

Andy13186

I know it was still my personal best run of all time, so i am happy + theres been tests done and it matches up with timeslips like i showed.

Entaille

I would wait until you visit a real track to make assessments in changes and upgrades, personally. with a .60 of that caliber there is plenty of room for change in times via driver skill.

not saying your tires aren't excellent or they aren't gripping better, I am sure they are, just hard to trust the source of the stats!

gburke1

I wasn't trying to discount your better run, congrats on that. Just saying dynolicious has been known to not be super accurate especially on 60' times. It's not that far off if I remember correctly on the actual 1/4 mile though

Goldenpony

We have new Super Sports on both our cars (wifey's '08 Miata GT and my '06 Mustang GT 'vert). We both absolutely love them. Best tires I've ever driven on.

moosestang

I've spun all of first gear, at a track, and still managed a 2.3 60 foot time. The accelerometer based units can be accurate, but everything has to be perfect, flat road, etc.

It costs $25 to make as many passes as you like, do it.

The trap speed seems high as well, but that's probably the least accurate part of it. It's never going to be able to perfectly judge a 1/4 of a mile like a laser beam.

You also need to secure the device very well, assuming you're using a smart phone, don't just lay it on the seat.