All things being equal would a CTT with stock 265/50's and the sport pac (PTV & PDCC) provide more or less cornering stability at speed than a stock CTT with 21" sport design wheels (295/35)? Both upgrades run about $3500. Same thing with the CS, 18" 255/55 w/ pasm, as, ptv, pdcc, or steel springs w/ 20" 275/45 though the dollars here are not equal.

I'm thinking skidpad g's and slalom as one set of measures only. What say?

 

In short more.
The pdcc and PTV are options that fat outweigh any performance the larger wheel combo can provide.

 

I second what Jace said. Also wheels can be upgraded later, pdcc, ptv can not.

 

Thanks for the input; I am more at peace with my build now.

The numbers on the CS actually mimic the CTT in the sense that going from stock 255/55's to 295/35's will run near to 5k and above, if one has already checked the premium plus box. PTV at $1500 and PDCC at $3500 also get you to 5k but perhaps with superior handling. All good things to consider when folks start their builds. Still, no one can deny the good looks of the bigger wheels.

I believe the CTT already comes with PASM and AS, and adds only $3500 for PTV/PDCC.

 

I actually wanted multi wheel so those like myself have to pay separate for all
It's a good package if you want the sport wheel.
But either way true performance options like pdcc and PTV are options that can't be added and are far superior to larger wheels.
Or you can splurge and just get both
That's my true recommendation.