No spacers. Absolutely no rubbing. I've driven it hard on twisty roads, high/low speed bumps, full turns, reverse, etc. without issue.

 

I have a MY10, stock rims and ride height. They tires definitely take up the wheel well space well. I got a hell of a deal on these, that I couldn't refuse. I have MINOR rubbing up fronts. I'll post up some pictures tomorrow.

 

^^^^The rubbing is not surprising. Your OD is 1" more than stock (front & Rear). These sizes (aspect ratio) is NOT what the OP is questioning.

Lou

 

Has anyone running this 245/275 combo noticed an appreciable effect on fuel economy? As much as I would enjoy the improved driving dynamics, if there is a considerate mpg penalty, I might think twice given the mileage I put on the F.

Also, does anyone know if the MP4S is similar in weight to the the PSS?

 

When I upsized to the 245/275 combo I didn't see any appreciable difference in fuel economy.......I also went to PSS's and I don't know if the PS4S weight has been given out yet? But I would assume that because if outperforms the PSS in all categories that they would at least have the new 4S as lightweight as the PSS was/is?

 

you'll be fine. i run that tire with aftermarket wheels, not sure of the offset as it's not stamped on the wheel. i'm lowered on KW's, but was lowered even more on eibach and never rubbed. try a 295

 

^^^^NOPE - A 285/30/19 on the stock 9" wheel is pushing it. As I said earlier, I ran it when I had stock wheels with good results. Some others didn't like the combo. DON'T even think about 295 on a 9" wheel

Lou

 

Agreed, I wouldn't even do 285 on 9". 275 max

 

oh yeah, forgot about wheel being 9 inches. i guess i meant about not rubbing

 

Lou - you know I completely agree with you, but I am always alarmed when I see guys going for poke and putting 255s on 10 1/2" rims. It reminds me of the time I was in the Auto Hobby Shop while in the Air Force, and there was a guy with a lowrider stretching A series tires on a 9" rim. We are old enough to know exactly what that means too...

 

Can confirm that 245/35/19 & 275/30/19 will not rub with swift springs on the fronts only. I've done about 50 miles on the new setup and can't believe Lexus didn't put this size tire on the 2012+ rims to begin with. Overall very happy with the upsize. Thanks for everyone's input!

 

Yep, stretched tires are not my thing Don't know if you are aware, but I was the the USAF also. Not a lifer. Only 4 years - 1957-1961. A looooong time ago.

Lou

 

I just received a response from Michelin in regards to the weight of the PS4S vs the PSS ... guess the improved tread wear and grip comes with a slight weight penalty.

"We show that the new Michelin Pilot Sport 4 S tire design in size 245/35ZR19 weighs 24.28 LBS, compared to the Michelin Pilot Super Sport tire that weighs 23.18. Tire size 275/35ZR19 in the new Michelin Pilot Sport 4 S weighs 26.90 LBS, compared to 25.82 LBS in the Michelin Pilot Sport 4 S."

 

Those of you running 275/30 on the rears, do you get better traction when accelerating compared to the stock size?

 

I feel that I do.