Tire Pressure and Steering

[01MercGMLS]

Has anyone else noticed their car pulling to one side or the other with tire pressure variations? I recently had a flat and had to put my spare tire on. I checked the spare tire pressure and inflated it to 38 lb. After driving down the road and fighting the car I checked the passenger side tire pressure and it was 32. Inflated it to 38 and the car no longer pulls.

I have never seen a car that was this susceptible to tire pressure changes.

Anyone else...?

Sent from my SAMSUNG-SM-G930A using Tapatalk

[Bluerauder]

Has anyone else noticed their car pulling to one side or the other with tire pressure variations? I recently had a flat and had to put my spare tire on. I checked the spare tire pressure and inflated it to 38 lb. After driving down the road and fighting the car I checked the passenger side tire pressure and it was 32. Inflated it to 38 and the car no longer pulls.

I have never seen a car that was this susceptible to tire pressure changes.

Anyone else...?

Sent from my SAMSUNG-SM-G930A using Tapatalk


This phenomenon is absolutely normal. The tire with less pressure offers more rolling resistance. The car will pull to the side with lower pressure. Simple Physics. The bigger the difference in pressures, the more noticeable the pull is. A bad wheel alignment may overshadow any small difference in pressures.

[01MercGMLS]

I know it has a good alignment under it. I'm just saying with every car I've ever owned this smaller pressure difference was never an issue. It just seems to be exaggerated with this particular vehicle.

Sent from my SAMSUNG-SM-G930A using Tapatalk

[Bluerauder]

I know it has a good alignment under it. I'm just saying with every car I've ever owned this smaller pressure difference was never an issue. It just seems to be exaggerated with this particular vehicle.

Sent from my SAMSUNG-SM-G930A using Tapatalk


6 pound difference side-to-side is pretty significant on a Marauder with performance tires and really impacts your tire wear. I run 35 psi on the fronts and 38 psi rears to maximize tire wear. Some here have bumped the rears closer to 40 psi for the same reason. Recommend checking tire pressures frequently.

BTW -- my MM tracks very true and I can feel a difference when there's only a 2 psi differential side-to-side..

FWIW -- NASCAR drivers can notice a difference in handling at high speeds with a difference as small as 1/2 psi.

[01MercGMLS]

I'll have to do that. I try to keep them at 40 all the time because the tires have a max of 44. But... for some reason I lose air pretty consistently.

Sent from my SAMSUNG-SM-G930A using Tapatalk

[RubberCtyRauder]

max tire pressure is not what you should run, you should run what the car mfg recommends on door sticker. most cases adding 2-3 lbs over recommended gives best wear, road feel imo. 40 is prolly a little too high for a mgm..I would be running around 34-35 front and 36 in back if it were mine

[Spectragod]

Run 40 in my fronts, 18 in the rear.

Every individual will probably run what works best for them.

When we had a fleet of Vic’s, we ran 40 front/rear, got the best wear and tire life at that amount.


Sent from my iPhone using Tapatalk

[Turbov6Bryan]

I notice a bunch of marauder owners rear tires wearing out the center of the tire sooner than the outer, not because of burnouts

Lower your tire pressure some, I like 32 because it feels a bit softer

40 psi? I can only imaging it riding like a bucket truck

[01MercGMLS]

Still rides better than my other daily driver. LOLhttps://uploads.tapatalk-cdn.com/20180628/49699864875f6b0e963dafba05a674 06.jpg

Sent from my SAMSUNG-SM-G930A using Tapatalk

[Gryphonzus]

When running stock tires the rear tires wear out in the center at 36psi. After someone spoke to the engineers at the manufacturer they said to run the rears at 40psi to stop or slow down the center wear. I still do not understand the logic behind this but I do know from having three with stock tires that running them at 40 psi does work on the rear tires, front at 36.

[kirk]

For what it's worth, Ford engineers were running 38 on all 4 corners when we did the high speed laps on the Dearborn test rack many years ago.

2003 tag says 32, and I think the 2004 was changed to 34(?).

[sailsmen]

Reverse it and see if it happens.

The higher tire pressure on the rears keeps the tires round at speed.

[Spectragod]

I notice a bunch of marauder owners rear tires wearing out the center of the tire sooner than the outer, not because of burnouts



Lower your tire pressure some, I like 32 because it feels a bit softer



40 psi? I can only imaging it riding like a bucket truck



Fleet cars, we care about tire wear and life, not the ride. Factor in, we are lucky to get 16-18k out of a set of RSA’s and maybe 24k on the Firestone police tires. Or maybe we should just run them at 32 psi for the ride and let the taxpayers foot the bill for twice as many tires?


Sent from my iPhone using Tapatalk

[RF Overlord]

2003 tag says 32, and I think the 2004 was changed to 34(?).2004 was changed to 35.

[01MercGMLS]

All I can tell you is that mine rides amazing even with 40 lb in all four corners. I've never been a Ford or Mercury guy but I really dig this car! I've always wanted a Marauder and that is definitely next on my agenda.

Sent from my SAMSUNG-SM-G930A using Tapatalk

[Turbov6Bryan]

Fleet cars, we care about tire wear and life, not the ride. Factor in, we are lucky to get 16-18k out of a set of RSA’s and maybe 24k on the Firestone police tires. Or maybe we should just run them at 32 psi for the ride and let the taxpayers foot the bill for twice as many tires?


Sent from my iPhone using Tapatalk

I dont have a fleet car, so i run mine for ride quality. I dont understand how some cars wear out the center tread portion. i always thought that was from too much tire pressure or burnouts.??

[sailsmen]

Centrifugal force.

Think of a circular balloon rotating around your finger, it balloons out of shape away from your finger. Fill it with more air and it maintains its shape, although it now rubs your finger harder.

The additional air/pressure maintains the round shape.

[1stMerc]

But don't forget you may be starting out at whatever tire pressure, it will increase as you drive.


https://www.cartalk.com/content/summer-driving-tips-6

[Bluerauder]

But don't forget you may be starting out at whatever tire pressure, it will increase as you drive.


https://www.cartalk.com/content/summer-driving-tips-6


That's why all tire inflation recommendations are listed as "Cold" psi.