New Shoes and Lowered

[Lifesgud2]

Hi guys.

New to the forum but wanted to share a couple of pics of the Bull with new wheels and novitech

I do have an issue. Car drives fine however when driving on hwy at 50 mph or higher in automatic mode and you give a little throttle the traction light pulsates and car won't accelerate. It's weird. Almost like your under heavy acceleration in rain or snow. So I have to let off and then back on it and it seems fine. There is an obvious problem because the car never did this until after wheels and suspension was installed. Tire sizes are 245 30 20 and 325 25 21. Any thoughts or why this is happening??


2015 Huracan

[Hurricane]

The source of your problem is the 20/21 setup. Here is the answer that i got from my Lamborghini tech:

"Any mod to the vehicle can cause drivability issues, even installing the wrong brand/model of tire. Oversized tires can cause havic on the vehicles performance mainly because the vehicles computer is expecting a certain speed of rotation coming from the front and rear wheels and when it doesn't see that it assumes there is something incorrect in the vehicles setup and will try to compensate until it can't. Once it can't compensate then it assumes that there is something broken on the vehicle even if there isn't and will set a warning light.
The difference in the rear tire size from stock to what he has now is .7% slower which would tell the computer that the front tires are moving faster on acceleration and could potentially result in a loss of traction. This is more than likely the cause of his issue."

There are other members that have this setup tho so i'm pretty sure there is a solution to this issue.

[Ferruccio]

The source of your problem is the 20/21 setup. Here is the answer that i got from my Lamborghini tech:

"Any mod to the vehicle can cause drivability issues, even installing the wrong brand/model of tire. Oversized tires can cause havic on the vehicles performance mainly because the vehicles computer is expecting a certain speed of rotation coming from the front and rear wheels and when it doesn't see that it assumes there is something incorrect in the vehicles setup and will try to compensate until it can't. Once it can't compensate then it assumes that there is something broken on the vehicle even if there isn't and will set a warning light.
The difference in the rear tire size from stock to what he has now is .7% slower which would tell the computer that the front tires are moving faster on acceleration and could potentially result in a loss of traction. This is more than likely the cause of his issue."

There are other members that have this setup tho so i'm pretty sure there is a solution to this issue.

And everyone called me silly for sticking with 20's

But...I havent heard this issue from the other 21'er's, so not sure its really the cause here.

[Hurricane]

And everyone called me silly for sticking with 20's

But...I havent heard this issue from the other 21'er's, so not sure its really the cause here.

Here is something u need to consider, other 20/21 setup members had an MY15 Huracan, they made some software tweaks on MY16, maybe this is the reason!?

[davett]

I have the same wheel/tire sizes as you do, my car is not lowered and I haven't run into the issues you mentioned but I'm always in manual mode.
I'll try auto mode next time to see it I can recreate your issue.

[Lifesgud2]

Thanks for the replies. Much appreciated. It definitely has to do with wheels and tires. Problem is Pirelli is only tire company that makes size.


2015 Huracan

[Hurricane]

Thanks for the replies. Much appreciated. It definitely has to do with wheels and tires. Problem is Pirelli is only tire company that makes size.


2015 Huracan

Check Dave's reply above, i'm really curious if he can recreate the issue you mentioned.

[Lifesgud2]

I saw Dave's response. It happens when traveling at 45-75 mph and just touching the gas at maybe 1/4 throttle.


2015 Huracan

[Lifesgud2]

many have asked me if the problem still exists. We changed the front tires to a 255, and that seemed to fix my issue.

[davett]

many have asked me if the problem still exists. We changed the front tires to a 255, and that seemed to fix my issue.

I'm glad they fixed the problem, curious how that would have caused the problem you described? Any pictures with the wider front tires? Are they 20" fronts?