So here it is in a nut shell. The new Nitto 555Rll performed as expected on dry pavement or even a little better. Put about 100 miles or so before uncorking. Ambient temp around 70. Keep in mind these are
315/35R20 on stock widebody wheels so they aren’t going t be like 15,17,or 18” DR’s. Wish I had data logged ie: 0-60 and max Gs. thats for next time out. For a direct swap It’s got my nod, But again comparing to stock summer pirreli it’s not going to have all the qualities, longer life, & more top end speed rating, but getting the power to ground no comparison. Wet traction will have to wait for wet weather. Now for the dig result, after being on the highway with heat in the tire, exited ramp in track mode,(power chiller on traction control off) and knowing What a complete mash to right foot Might yield, one still Gutz to find out out the big question. And the result was 30 or 40‘ of moderate tire spin but the whole time launching the car forward, again wish I had data logging going for core results. Zero slide sideways. Pirelli would have been sideways. Caught 2nd and and very brief spin. The tires were Road Force balanced
The Tire price each was $358 and change delivered to door. I like them , the big question is how long they will keep the traction, wet weather traction, and how they will perform at lower temps. Another question will they improve with a little more summer heat? As far as handling with stock suspension I think about the same But in all fairness I didn’t push it that hard yet in corners. Ride was slightly more bounce. I tried knocking a few pounds out that helped a bit. They were not that noisy, in fact pirelli was a bit louder only for the shear fact they were all done, nothing left. As time goes on the sound will probably amp up. A Perfect scenario would be a set of killer custom Triumph wheel and tire set up, a set of custom drag radials and wheels for the track, also these for bone stock wheel with direct tire swap.
.02 of course