[2023_ZL1-AUTO]

Let just say this first: SCARY! (more on that at the end)

So, I've been having a very bad vibration problem, this has come up in the past with my car since going to the Weld Solana's and running Weld 18x8 w/Nitto G2's on the front and the Weld Bead Lock 17x10 w/305/45R17's w/ MT ET Street R’s on the rear. After I had them Road Force balanced about 3 months ago, due to still having vibration issues. Things seemed good, that was right around the time I went to Jax Wax Street Madness and drag raced my car. It ran good with no noticeable or very-very little vibration. In the meantime, I also had the 1 pc carbon drive shaft fail a few months ago and went back to my stock drive shaft.

So, worried if the vibration (bad at any speed over 50mph) was wheel/tire, drive train, or suspension related. I decided yesterday to put my stock wheels with the Nitto R555R2's back on and see if the vibration was any differed.

I first swapped the fronts with the stocks, drove it and the vibration was just as bad. I came back home and swapped the rears, and drove it and no vibration at all, at any speed topping out at 150mph, it was smooth as glass! Today, I decided to fill the rears up to 50psi and sit them out in the sun all day, hopefully make the find the roundness better. But, I examined the wheels and realized ALL the balancing weights were gone, and just the adhesive sticky was on the inside of the wheel. So, I assume they came off at some point, and a rebalance will get them back in order. But, I'm considering have them use the clip-on weights vs the adhesive type weights. Any thoughts?

But, what was really scary was with the stock wheels and the Nitto's and how badly my car had like NO TRACTION under WOT. I mean, I smashed the pedal in 3rd at around 50mph and I almost fish tailed in to the concert divider on the freeway. I hit WOT again in 4th and almost the same, but it wasn’t as out of control. I guess, I'm just used to how the Mickey's grip and have traction since I've been running them on my car since April. But, wow, I can't even imagine running the street tires on my car after having that happen yesterday. I will add, with traction control OFF, it felt like a death trap, even with all the nanny's on, it still fish tailed and was out of control badly.

[Bangkok_ZL1]

Originally Posted by 2023_ZL1-AUTO

But, what was really scary was with the stock wheels and the Nitto's and how badly my car had like NO TRACTION under WOT. I mean, I smashed the pedal in 3rd at around 50mph and I almost fish tailed in to the concert divider on the freeway. I hit WOT again in 4th and almost the same, but it wasn’t as out of control. I guess, I'm just used to how the Mickey's grip and have traction since I've been running them on my car since April. But, wow, I can't even imagine running the street tires on my car after having that happen yesterday.

This is "sort of" what happened to me when I was testing after installing Jannetty's 125 package and running E-53. I was supposed to mash it in 4th without traction control or Stabilitrak, and the car jumped damn near into the median from the center of a 3 lane CONCRETE highway. This scared the living piss out of me. I saved it. But I wasn't expecting anything like that. I tried it again in 5th and a tamer jump happened. After conferring with Ted. I learned I'd done it wrong. So now I have to do it again. This was actually about 9 months ago. So, I just got back from another long stint in the USA again to support my Dad after my mother's passing. I just put in the BMR Cradle lock out, and I'm making a few more adjustments. Then I'm going to try this again. Damn that was freak'in scary.

[KingLT1]

You are pretty much always going to run into issues with the Mickeys at some point. They are a tire designed to be driven to and from the track to race. They are not designed to strictly be run on the street. Every pair of mickeys I have owned was shit by 1000 street miles.

I would go larger on the 555r2 and keep the tire pressure around 23-24psi. Also I wouldn't turn all the nannies off. Just turn off tcs and leave stabilitrak on. ZL1's are notorious for jumping lanes and fish tailing with wheel spin. Not sure if it's the ELSD or what but my SS goes straight on all stock suspension. I can pin it to the floor from second on a 305/35/20 555r2 and it will spin but go straight. It's a high 13x-140mph car in the 1/4 mi.

[arpad_m]

Tagging on to King's observation, my SS behaves the same way, it spins but doesn't go sideways unless the steering wheel is turned. Tires are a huge factor, but perhaps the old school mechanical LSD is less prone to this (my car is a non-1LE, too).

[2023_ZL1-AUTO]

Originally Posted by Bangkok_ZL1

This is "sort of" what happened to me when I was testing after installing Jannetty's 125 package and running E-53. I was supposed to mash it in 4th without traction control or Stabilitrak, and the car jumped damn near into the median from the center of a 3 lane CONCRETE highway. This scared the living piss out of me. I saved it. But I wasn't expecting anything like that. I tried it again in 5th and a tamer jump happened. After conferring with Ted. I learned I'd done it wrong. So now I have to do it again. This was actually about 9 months ago. So, I just got back from another long stint in the USA again to support my Dad after my mother's passing. I just put in the BMR Cradle lock out, and I'm making a few more adjustments. Then I'm going to try this again. Damn that was freak'in scary.

Sorry to hear about your mothers passing.

[2023_ZL1-AUTO]

KingLT1 and arpad_m - Thanks for the input. Yeah, I'm pleasantly surprised how dang amazing the Mickey's BITE and get traction. They are pretty amazing. I realize I will need to relearn and adjust my driving style when not running the MT ET Street R's !