Front vs rear wheel sizes for best handling

Of course you can have cars handle decently well with BFG T/A's, but not if you set your suspension up for modern soft compound tires. That's not a theory, I've done it. If you put BFG T/A's on my Duster, with it's 1.12" torsion bars and giant Hellwig sway bars, taking it around an autoX course would be like driving on a skating rink, you'd be in oversteer mode the entire time and if there were any bumps good luck picking the cones out of the undercarriage. Just like my Challenger was when I was running 15" hockey pucks with a decent height stagger and 1.12" torsion bars, it was noticeably loose even on the street. Now that it has 275/40/17's on all 4 corners it feels much better. Step the torsion bars down to 1" or even 1.03" and you'd be fine, but that's a reduction in spring rate by almost 1/3 compared to 1.12's.

You have to match your suspension to the level of grip you provide with your tires, that was my point. Everything starts from the tires. I spent most of my youth driving a '56 Austin Healey on the street that had been set up for Vintage Racing and race compound tires. Lots of fun, but not nearly enough suspension compliance for street tires, it was loose as heck. It didn't stop me from putting tens of thousands of miles on it, but it needed less spring rate for what I was doing with it. It was always in oversteer mode at the autoX's I ran with it. Or did you not think I did that? Maybe not recently with my Mopars, but I've autoX'd, built cars for and competed in FSAE events while in college, spent numerous days at the track with my sport bike, and had professional EVOC training. I'm sure I'll have more tuning to do when I finally do get my Mopars to the track because I can't push them hard enough on the street to have everything perfect, but that doesn't mean I don't know what I'm talking about or that I'm not in the ballpark.

I agree, at the level most of the people on this board use their cars a small to moderate front-to-rear height tire height stagger probably won't be noticed at all. That's why I said it would depend on the use of the car and wouldn't be significant on the street, it's right there in black and white. Heck I run 275/35/18's up front and 295/35/18's out back, so my front tires are 25.6" and my rears are 26.1". But that doesn't mean there isn't a difference. It does change the roll center, and that does change the handling, regardless of whether or not I notice it running around on the street (and I don't). Pick up any of the books by Carrol Smith and you can read all about it, these aren't just theories I'm making up as I go along. It's information based on the experience of people that have raced at a far higher level than anyone here, myself included.

Do whatever you like. The question was asked if a front-to-rear tire height stagger makes a difference. It DOES. It changes the rear roll center of the car, that's a fact. Will anyone here notice that on the street or doing weekend warrior autoX's, Optima street car challenges or even SCCA CAM events? I don't know. But I'm not going to say it doesn't make a difference.