AlanW

I ordered tires from the Tire Rack on-line yesterday. I had a message from them today that they needed to talk to me about the tires I ordered not being "extra-load" rated as the OEM tires were. They said it was not really a problem, but had to talk to me before shipping the order.

Why the extra load tires on a TL-S? Wouldn't standard load tires be enough for a mid-size 4-door sedan? And the tires I ordered are "UHP" 'V" rated, so shouldn't that be stout enough?

Can somebody explain before I call Tire Rack back? The tires I ordered are Goodyear Eagle GT VR A/S.

TLAwesome

The OE Michelin HX MXM4s are load rating XL, 93V. The Goodyear Eagle GTs in that size are only load rating 91.

Unfortunately for you, you should really stick with a 93 or higher load rating. The Yokohama AVID W4s, which is similarly priced at $113, has a 93V XL service description.

Two other choices would be the slightly more expensive Eagle F1 A/S and the significantly more expensive RE960 A/S. Both of those have an even higher 95 load rating.

Here's what the numbers mean:

91 = 1,356 lbs.
92 = 1,389 lbs.
93 = 1,433 lbs.
94 = 1,477 lbs.
95 = 1,521 lbs.

From tirerack: "A tire with a higher load index than that of the Original Equipment tire indicates an increase in load capacity. A tire with a load index equal to that of the Original Equipment tire indicates an equivalent load capacity. A tire with a lower load index than the Original Equipment tire indicates the tire does not equal the load capacity of the original."

You shouldn't go lower than OE.

fsttyms1

The UHP according to their site is a 95v which is plenty.

TLAwesome

fsttyms, what are you talking about? The Eagle GT is 91V:

http://www.goodyeartires.com/eagle/eagleGT_sizes.html

AlanW

They are 91V rated, but Tire Rack said no problem, just that I would have to run them at minimum of 35 PSI instead of the Acura 32 PSI rec on the door label.

That is no problem because I will probably run them even higher than 35 PSI anyway.
The max pressure on them is 51 PSI.

Also, rated load on them is 1356lbs, X 4 = 5,424lbs..minus 3550lbs for the TL-S leaves 1,874 lbs for load capacity, which would equal 5 - 375lb passengers..I don't see a problem.

Besides, I already received the tires in an amazing 2 days from tire rack.
They are massive looking compared to the worn out mix of Contis and Yokos that were on the car. Waiting on my wheels to be refinished, hope to get them by Friday and get the GTs mounted on Sat and see how they feel.

ZEUS'O3TL

from what i have read u should NEVER go by what the tire says as far as Max PSI..i rememeber Kris sayin that tires get hot and expand if u have too much air "WAIT....WAIT...BOOM THERE GOES THE DYNAMITE!!!"....

fsttyms1

I stopped reading at I was looking at the General UHP

fsttyms1

A good rule of thumb is 80% of max and adjust down from there.

A lil Side note my last track day my street tires went from 30PSI start of session to 45PSI at the end of a 15 min session (to a high of 49 )

AlanW

I'll probably start out at 40 PSI and try that for awhile, then adjust downward as needed.

fsttyms1

I typically ran any where 36 to 38 on average. Sometimes when its a long hwy trip id bump it to 40 (little better mileage)

AlanW

On these cars, do you find it best to run the fronts a little higher than the rears, or do you keep them equal?

fsttyms1

If i have the fronts at 38 i typically run around 35-36 in the rear.