ive ran the new indy 500's @ 225/40/18 for about 8k mi. affordable & better than stock, although I rarely lean on em heavily in corners. havent auto-x/tracked since mounting them. i dig the blockless tread pattern, cant speak to the anti-hydroplane groove through the center. mine were squishy, like noted above, and they either firmed up or my senses adapted to the sensation.

imho good call on sticking with stock sizes, I've read quite a few posts about people unhappy with 225 on stock (7" wide) wheels and call whatever tire shit as it feels all floppy and soft because the tire is pinched, good tires too like MPSS and Conti's.


I've got 215/45/17 MPSS on stock wheels for dailying, <$600 mounted and balanced at Costco, every month they swap between offering $70 off a set of Bridgestones or a set of Michelins. There's probably an equivalent Bridgestone Potenza compound but everyone gets a hard on for Michelin so idk. I'm hoping these last me ~20k miles with the occasional autox and slim chance of an hpde, not as quiet as stock, definitely more grip, but not as grippy or loud as the Dunlop ZIISS I had. I've never put all seasons on this car.


Tirerack is a solid source, pretty much every private shop is actually just going to order from Tirerack whether they tell you that or not. Big chains probably have their own supply chains they manage (Costco, Bridgestone/Firestone, America's Tire, etc.)

Read a bunch of reviews on compounds and comparison tests (Tirerack does these) but it sounds like a ~300TW Max performance summer (I think that's what MPSS is) is what you want. Stickier and firmer than stock or all seasons, longer lasting than the 200TW track/autox tires.

Y'all trust Costco w/ aftermarket wheels? I don't want my babies scratched. I was planning on MPSS / PS4s or Conti DWS since I'm at 35k miles.

I certainly wouldn't. I only trust boutique shops like AutoRnD or Elite Performance to not scratch my wheels.

^that

I'm running 235/40/17 Yokahama S-Drives, bought the set for $500 with installation at Elite during a sale. They are directional summer tires, so they aren't too grippy in the rain (which is ironically when I got them installed), but they grip very well other than that.

I wouldn't trust anybody with aftermarket wheels unless it's a reputable shop, but for stock wheels it's whatever. However after having them put tires on I'm never doing it again. Took like 4+ hours even with an appointment.

One hour per tire/wheel. Seems about right.

:bs:

I just put some new tires on my new wheels. I decided to try out some budget performance tires. I put on some SUmitomo HTR Z iii.

I have about 500 miles on them so far. Not bad so far. Sidewall is tad squishier than i would like but they grip very nicely. I probably need another 500 miles or so before full break in. My stopping distance is also shorter now compared to when i ran the HTR P/S 02 all weather tires they had. These have the same paper specs as the MPSS at 300 treadwear and AA grip and A heat. They definetly arent AS grippy or as comfortable. However at less than half the price per tire i'm pretty happy so far.

Price on tire rack = 86$ per tire. Will be cheaper in your size. I got them in 234/45/17. Got them shipped and mounted for just under 500$.

Any reason why you chose to go 235/45 on a 17x9 instead of 245/40?

I am running 255/40/17 indy 500 for $560 tires/install/balance @ autoRnD and its pretty good for me so far, I track, and touge a lot.
But i would like to try new tires like RE71r next year, and I would recommend re71r or MPSS if you have extra budget.

In my experience that's about par for Costco, they don't have techs sitting around waiting for you to come in they're banging out cars as fast as they can and just stack them up willy nilly so an appointment only means they'll do it that day, not necessarily a tight window. They don't literally take 4 hours to do one set of tires, but they'll make you wait that long.

Which in hindsight is worth mentioning, I don't mind since it's near my work, I just drop it off and get a ride there and back, but if it's not convenient then yeah it can really suck.

I generally like a meatier tire and i like the way 45 feels. I was a bit afraid that i would get some stretch putting a 235 on a 17x9 however after the tires were mounted theres practically no stretch if any at all.

Also after 225 on a 17x7.5 it just felt like it was more tire than wheel. It might be specific to the Sumitomo tire but going down a size feels SO MUCH better. Granted these tires in general are a huge step up from my previous all weather tires so that has a lot to do with it. But tire stability is improved.

Keep us updated on how they feel after another 500 miles!