Seeking New Tire Combo Advice for GT-5 Conversion w/ 17s

I had a front wear out from a bad ball joint, so I replaced both fronts. Like you I couldn't get ps2's so I ended up with Pilot Super Sports 225/45/17. The tread pattern and tire was very similar to the old ps2 and they were nearly indistinguishable from what I pulled off. I still have the old 335/35/17 on the back.  Check if you can have a look at those in the size you want or possibly newer PS4's for the front and then compare them with the tread on your rears. If you switch to a 315/35/17 rear you might be able to find a true matching set, but I think that may have changed now as well.

I believe PS4's come in the front size you want but I have not seen them side by side to see how they compare to a ps2.

Yeah, I actually chatted with a person on tirerack asking that very question earlier, and of course he gave the standard response that the manufacturers don't recommend a mismatch in tire model, but it's good to hear from someone who has done it (not exactly, but similar).  And I think I tried the 315 route, I'm not set in stone on 335s, though they do bring many comments lol.

Original GT5 widths were 345 & 285, on my GT5 aftermarket 17" rims I have always used 335/35-17 rears and 275/40-17 fronts, both available in the Michelin Pilot Sport PS2

... or use a 255/40-17, which is also available. I'd buy a new pair of 335/35-17's now too, while you still can. Yours are nine years old and if you wait another year, you may not be able to get them at all.

Great suggestions, guys, thanks.  I had also considered 255 for front, I just feared they might scrub, but time will tell.  275 would of course be more likely to scrub, but 255 wouldn't be too much of a stretch from where I am now.  275s even sound tempting, though turning them in a parking lot without power steering, I could see being a challenge.

Well if you want the true GT5 experience go with the 275's I also have upgraded upper a-arms with 7.5 degrees caster to help tram lining at speed. Tire scrub depends on your wheel offset, mine were made to original GT specs, although I can get a slight tire rub on one side at full lock.

I missed the part where your tires are 9 years old! 6 years is the recommend maximum and most shops won't even handle anything over that age now for liability.