I'm trying to order a set of tires in a 305/25-20 rears, and matching a 235/30-20 for the fronts. My options seem to be very limited. I called Discount Tire and they won't sell any tire with a load factor of less than 10 for the rears, even if they're classified as Extra Load (XL). On the other hand, Tire Rack states they'll work.

Anyone who's running 20" can you chime in on what you're running for the rears and who's the manufacturer?

 

Hankook Ventus. Speak w/Damon @ Tire Rack. They stock them.

 

That's what I'm running on the car but in 19". In the 20" referenced above they're not loaded a minimum of 100 for the rear, but they're XL which I'm told by Tire Rack it'll work. In any case I'll contact him to check.

Just wondered what those who run on 20" are using?

Thanks.

 

305x25x20's Hankook

 

What about 325/25-20 - Michelin PSS.

 

so what iss the load factor and what does it have to do with the car, and running them or not running them, i have a set of new pirellis from a 991 and will run the 295/30/20 that comes stock on 991, but have to rop to 235/30/20 fro front...tried to moount the 245/35/20(stock setup for 991) but they rub on the springbase cup ,being 35's, i know guys have the smaller tires on the front, no prob, but this is the first i've heard of load factors...what am i missing?

 

The 997 rear has a minimum load index of 100. The load index is the tire's assigned numerical value used to compare relative load carrying capabilities. As such, the higher the load index number, the greater the load carrying capacity. A guy at Discount Tire would not see (or mount) any tire to the car that doesn't meet the manufacturer's specification. However, there's also a tire with a load index of 98 that'll work that's also designated "XL" but they still won't. In any case, I'm going to do to Tire Rack and order them. I just have to take them to one of their approved installers. I was hoping to go to Discount Tire so I could purchase their replacement certificate, especially if I went with the more expensive Michelin's, but I'll just go with the Hankook since they're less than half the cost and take my chances.

 

Thanks, but I think that'll be too much tire for the narrow body, especiallu since my car is lowered quite a bit (like the pictures above).

 

Are you running 325/25-20?

 

Discount shows Michelin 295/25-20 if you want to go down.

 

Thanks. I think I'm going to go with the 305/25/20 in the Hankook and call it good. I appreciate the input.

 

No, 305's. Go to the Tire Rack site. Select a 997 turbo as your vehicle. Opt for 20" rims. Select a set then shop for tires. 305's Hankooks will come up.

 

I believe there's a warranty for the Hankooks and Tire Rack offers stuff like that as well. My experience w/Discount Tire is that while they're certainly knowledgeable, they're expensive when it comes to mounting a tire. They wanted appx. $250 to get the TPMS out of my OEM 19's and mount the 20's. The guys painting the rims charged me $60.

 

I have those exact tires on my wheels and they've been fine. Even stranger, I got them from Discount Tire and they didn't quote any stuff like that. They even matched Tire Rack's price.

Hope that helps.
Ron

 

Thanks. I couldn't understand the rationale given the XL rating. I ordered them from Damon at Tire Rack.