Hello every one I just got my SL and I would like to know if any of you guys know the correct tire preasure on the 19 inch wheels???

Attached is a picture of my car , I live in San DIego CA.

 

...and cannot spell. Preasure?

 

Hmmmm. . .Isn't that information on the side of the tire?

 

The information you're looking for is on a label you'll find on the drivers side door jamb (where the door meets the body opposite the hinge).

 

Its noot on the gas lid. Does the dealer know?

 

Per Luke at the tire rack:
F=36lbs
R=32lbs
These are different that what MBZ indictes.

 

Nice SL, but it would benefit from a lowering module

 

Hemm,

On my 18" wheels, my car vibrates on any air passed 34 PSI on my front tires.

 

36 Front and 32 rear seems weird no??? , Sorry if I miss spell but I am Mexican.

Sticker on the car talks about 18 inch wheels not 19" !!!!!! any of you guys really have an SL????

 

Isn't this information in your owner's manual?

 

I thought I owned a SL. I did say in my reply 18" wheels. Just asked your dealer what are the recommended tire pressure for 19".

 

From the Advance Auto Pats web site:

"One simple method for finding the right pressure for your vehicle is to draw a chalk line across the tread, then drive a bit and check the line. Even wear is good, while the line fading in the center indicates over-inflation. Worst is when the chalk mark wears off at the outer edges (shoulders) first, meaning that the pressure is too low. Under-inflation lessens the tire's load capacity, can make for squirrelly handling and, most importantly, makes the tire run hotter. Hot tires tend to disintegrate, regardless of who made them. Consequently, it's better to err on the high side, even if ride quality may suffer and the tire wear pattern could be less than optimal. However, do not exceed the maximum pressure as stated on the sidewall—there can indeed be too much of a good thing.

Once the lines wear off evenly, note those pressures for future reference. While the inflation must be identical for both ends of an axle, the front tires in a front-engine car will often require a slightly higher pressure since they usually carry more of the weight of an unladen vehicle."

Rotarynews has a method that's more oriented towards the sporting driver:

"At the track, or on your favorite curvy stretch of road, take some chalk and mark all four of your tires. Make the mark across the tread portion of the tire, around the edge, and about an inch down the sidewall (about where the lettering starts on the side of the tire).

After making a few passes through both left and right hand curves, pull over and check the tires. What you hope to see is all the chalk rubbed off the tread on the tires, and almost all of it still on the sidewalls. How much is almost? If you've only rubbed off one sixteenth of an inch of the chalk on the sidewalls, that's good. If any chalk remains on the outer edges of the tread, you have too much air pressure. If the chalk is rubbed off down to the lettering on your tires, you've got way too little.

That's as close as the chalk method gets. It lets you know that you're not at the extreme end of either spectrum."

If you want more accuracy, you'll need a pyrometer.

Jim

 

I went through this exercise a few months ago, and literally could NOT get the same answer from any 2 people I asked. Even calling 6 different MB dealers resulted in 6 different answers. I eventually went with the numbers on the door jamb and the ride is fine, with hopefully good tire wear.

 

Also check the tire sidewall it self.
Remember, different dealers might have different OEM tires.

 

Thanks for the replys , So If there is something like a San Diego Meet , Count me in. I am in the Downtown Area.

Sl500 is a very nice car , a bit heavy for my taste coming from an E46 M3 , but speed is really good. Also Fuel consumption is not bad at all. The hardest thing is keeping it clean.

 

So how do I get a triangle. I feel left out.

 

You won't have on on your post, because you can't report your own post!

 

first, let me make it clear to all, thesl is my wifes car. i get to drive it only if i've been good all week. having said that, good luck on hooking up with other sl owners in san diego, we all avoid each other like the plague. just kidding. :p my wife's previous car was the jag xk8, and although we liked that car a lot (it's now sold) the cars are not comparable. it still amazes me how with all that weight, it locks into curves in the road so well at high speeds. they obviously have great technology. bobby, my first car was black. i promised myself "never again". when it is clean, there is nothing more beautifull. it just gets dirty so darn quick! but this sl in black is the only way to go. i have not washed(much less waxed) my own cars for many years. but so far, no one else has laid a glove on it. just enjoy keeping it clean bob. it's a labor of love.

 

Guys,

The pressure indicated on the sidewall of the tire has almost nothing to do with the tire pressure you should be running. The sidewall pressure is the maximum cold tire pressure that the tire can handle safely.

The manufacturer recommended tire pressure should be on the gas flap, on the driver's door jamb, and/or the car's manual. That pressure applies regardless of rim diameter, tire size or brand of tire.

Tire pressure is a compromise between ride quality, handling, load capacity, wear, and pothole protection. Mercedes leans toward lower pressures for better ride quality. Many people increase the pressure above OEM for better handling and more even treadwear.