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275 tires on GT350 with stock rims?

R3G

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Looking at buying a used 2020 GT350, car looks good except from the pictures it shows 275 “new” tires, guessing these were installed to cut flipping costs. Its about $2K expense to buy a set of 295/305 tires…is it safe to drive on 275s on the stock rims? Sales guy is supposed to call me back with the exact tire setup today.
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EFI

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That's a bit of a stretch, no pun intended, but should be fine to get by.

I've seen worse with the hella flush crowd, but I wouldn't drive on it too much after getting the car.
 

pilotgore

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Looking at buying a used 2020 GT350, car looks good except from the pictures it shows 275 “new” tires, guessing these were installed to cut flipping costs. Its about $2K expense to buy a set of 295/305 tires…is it safe to drive on 275s on the stock rims? Sales guy is supposed to call me back with the exact tire setup today.
Once you find out the exact tire, go to tire rack and lookup the tread width. Billy Johnson posted recommendations a while back for tire width and rims. I might be totally misremembering but I was thinking he advised not to go more than .5” - .75” different than stock.

On a related note, while in college I flew a used car dealer around to auctions twice a week. On one of our first trips he advised me that when buying a used car, always look at the tires. An owner who skimps on tires is likely to skimp on other maintenance that may not be readily apparent.

Maybe it’s not terribly applicable in your case, but if this is a flip and they chose to cut corners on the tires, is there anywhere else they chose to cut corners? Also…. Make sure the car didn’t come from Florida or any of the other spots that had horrible hurricane water damage this last year. Apparently flooded cars get sold all the time with no title branding.
 

ChipG

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An alternative potential rationale: I run 285s all around on my stock rims in the winter. That's the closest size that was available in the tire I wanted for winter driving. They're a bit stretched, but they fit. Given their intended usage (cold weather) they work fine as I don't expect tons of grip on roads below 40*. Perhaps the seller had aftermarket wheels/tires on the car and sold those separately before selling the car on the OEM wheels. It could still be a cost-cutting thing, though, if the stock wheels weren't being used and didn't have tires pre-sale.

The suggestion to check the specs is a good one. For comparison, mine are Michelin Pilot Sport A/S 3+ in 285/35r19, which supports a rim width of 9.5" - 11.0" (per Michelin).
 

JAJ

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The tires, provided they're like most 275''s, will fit and be safe to drive on with 11" rear rims and 10.5" fronts. The speedo might be off a bit, and they won't provide the grip that wider tires do, but otherwise they're ok for getting around. FP recommends 255/40 fronts and 275/40 rears for winter and that's what I run on my GT350. Better traction in heavy rain with narrower tires.
 

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NightmareMoon

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what brand/model are they? If they skimped on 275s, I'd be worried they also skimped on the actual tire model.

While a 275 is probably safe on an 11" wheel, its not ideal. Make sure you have some rim protection from the tire at a minimum if you're considering running them.

In situations like that I'd probably dismount the tires and try to flip them, then use that cash to fund real tires. Hell, I bought a new truck recently and dismounted the tires on day 2 so I could replace the stock tires with better.. Then sold the original tires online a couple days later and that paid for about 1/2 of my out of pocket cost on getting the tires I actually wanted.

Also, use the wrong/cheap tires as a negotiation point. Its a sports car, putting the wrong tires on it should factor into the sales price.
 
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R3G

R3G

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Thanks guys, very helpful. I dont plan on tracking the car, i just enjoy the sound the engine makes while shifting gears but never say never! I am deciding on this used GT350 (low miles) vs a new Mach 1 with handling pack. Got pending deals on both. Tough first world problem tonight. White Mach 1 vs Magnetic GT350. Wife says i cant have both 🤷‍♂️ If i get the 350, I think I’ll see how these tires drive but probably replace them with the stock sizes sooner than later. I see a lot of fear porn here on the VooDoo engine but i do prefer FPC sound it makes. But also prefer to buy new…decisions.
 

TommyBoyDIY

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Been running Michelin PS4S 295/35/19 all square for 6,000 miles. Street use only. Stock rims. Very good tire. At a speedo reading of 70 mph the actual speed is 69.3 mph.
Hey I was just looking at running the same all around. Do they fit good on the stock wheels?
 
 




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