General EV Conversation
12-08-23, 08:11 PM
#541
12-10-23, 07:31 AM
#542
Racer
Thread Starter
I've been experimenting with tire pressures on the EQS over the last few weeks. My priorities are ride comfort, steering feel, handling, efficiency, probably in that order.
The factory recommended settings are:
I tried the max load setting at 47 Front 43 Rear and found the ride quality to be too stiff (for reference I'm already on run-flat tires which doesn't help anything).
I tried 43 Front 43 Rear. This wasn't too bad. I thought I liked it at first. It seemed to make the EQS feel a little lighter on its feet and I liked the steering feel but I was feeling the road a little more than I'd like from a car like this, especially on the highway.
I tried 40 Front 40 Rear. Ride quality was better but not as much as I thought it would be. The EQS was feeling a little heavier now, the steering felt a touch heavier and more numb.
I tried 38 Front 38 Rear. I found ride quality to be getting worse again. It wasn't feeling stiff but I was also feeling bumps I wasn't used to feeling. At these pressures, I'm now also concerned about long distance efficiency.
I went back to the stock 41 Front and 41 Rear and found that it really is the best of all worlds. This seemed to have the best ride quality, best steering feel, it retained the more effortless and light on its feet feeling, etc. It was just very comfortable and very well balanced. It shouldn't be too surprising as I'm sure there's a reason the engineers settled on these pressure values, but I found it really surprising how much of a difference a couple pounds of pressure makes.
The factory recommended settings are:
- Normal Load: 41 Front 41 Rear
- Max Load: 47 Front 43 Rear
I tried the max load setting at 47 Front 43 Rear and found the ride quality to be too stiff (for reference I'm already on run-flat tires which doesn't help anything).
I tried 43 Front 43 Rear. This wasn't too bad. I thought I liked it at first. It seemed to make the EQS feel a little lighter on its feet and I liked the steering feel but I was feeling the road a little more than I'd like from a car like this, especially on the highway.
I tried 40 Front 40 Rear. Ride quality was better but not as much as I thought it would be. The EQS was feeling a little heavier now, the steering felt a touch heavier and more numb.
I tried 38 Front 38 Rear. I found ride quality to be getting worse again. It wasn't feeling stiff but I was also feeling bumps I wasn't used to feeling. At these pressures, I'm now also concerned about long distance efficiency.
I went back to the stock 41 Front and 41 Rear and found that it really is the best of all worlds. This seemed to have the best ride quality, best steering feel, it retained the more effortless and light on its feet feeling, etc. It was just very comfortable and very well balanced. It shouldn't be too surprising as I'm sure there's a reason the engineers settled on these pressure values, but I found it really surprising how much of a difference a couple pounds of pressure makes.
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AMIRZA786 (12-10-23)
12-10-23, 09:27 AM
#543
Lexus Champion
I've been experimenting with tire pressures on the EQS over the last few weeks. My priorities are ride comfort, steering feel, handling, efficiency, probably in that order.
The factory recommended settings are:
I tried the max load setting at 47 Front 43 Rear and found the ride quality to be too stiff (for reference I'm already on run-flat tires which doesn't help anything).
I tried 43 Front 43 Rear. This wasn't too bad. I thought I liked it at first. It seemed to make the EQS feel a little lighter on its feet and I liked the steering feel but I was feeling the road a little more than I'd like from a car like this, especially on the highway.
I tried 40 Front 40 Rear. Ride quality was better but not as much as I thought it would be. The EQS was feeling a little heavier now, the steering felt a touch heavier and more numb.
I tried 38 Front 38 Rear. I found ride quality to be getting worse again. It wasn't feeling stiff but I was also feeling bumps I wasn't used to feeling. At these pressures, I'm now also concerned about long distance efficiency.
I went back to the stock 41 Front and 41 Rear and found that it really is the best of all worlds. This seemed to have the best ride quality, best steering feel, it retained the more effortless and light on its feet feeling, etc. It was just very comfortable and very well balanced. It shouldn't be too surprising as I'm sure there's a reason the engineers settled on these pressure values, but I found it really surprising how much of a difference a couple pounds of pressure makes.
The factory recommended settings are:
- Normal Load: 41 Front 41 Rear
- Max Load: 47 Front 43 Rear
I tried the max load setting at 47 Front 43 Rear and found the ride quality to be too stiff (for reference I'm already on run-flat tires which doesn't help anything).
I tried 43 Front 43 Rear. This wasn't too bad. I thought I liked it at first. It seemed to make the EQS feel a little lighter on its feet and I liked the steering feel but I was feeling the road a little more than I'd like from a car like this, especially on the highway.
I tried 40 Front 40 Rear. Ride quality was better but not as much as I thought it would be. The EQS was feeling a little heavier now, the steering felt a touch heavier and more numb.
I tried 38 Front 38 Rear. I found ride quality to be getting worse again. It wasn't feeling stiff but I was also feeling bumps I wasn't used to feeling. At these pressures, I'm now also concerned about long distance efficiency.
I went back to the stock 41 Front and 41 Rear and found that it really is the best of all worlds. This seemed to have the best ride quality, best steering feel, it retained the more effortless and light on its feet feeling, etc. It was just very comfortable and very well balanced. It shouldn't be too surprising as I'm sure there's a reason the engineers settled on these pressure values, but I found it really surprising how much of a difference a couple pounds of pressure makes.
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signdetres (12-10-23)
12-10-23, 09:41 AM
#545
Lexus Champion
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signdetres (12-10-23)
12-10-23, 09:43 AM
#546
Racer
Thread Starter
I think “high” is relative. Depends on the vehicle weight, wheel/tire size etc.
Our EQS weighs around 6200 lbs and wants 41 PSI all around.
Our Model Y weighs around 4400 lbs and wants 42 PSI all around so if anything, I’d say our Model Y is running a bit high. 🤷🏻♂️
Our EQS weighs around 6200 lbs and wants 41 PSI all around.
Our Model Y weighs around 4400 lbs and wants 42 PSI all around so if anything, I’d say our Model Y is running a bit high. 🤷🏻♂️
12-10-23, 09:44 AM
#547
Lexus Fanatic
Yeah just a pound or two of pressure makes a big difference
On a Mercedes you want to look at the fuel door (or I suppose charging flap) and use that pressure not the one on the door.
On a Mercedes you want to look at the fuel door (or I suppose charging flap) and use that pressure not the one on the door.
12-10-23, 09:46 AM
#548
Lexus Champion
You can also run them at 41 with no issues, which a lot of Tesla owners do
12-10-23, 10:38 AM
#549
Racer
Thread Starter
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AMIRZA786 (12-10-23)
12-10-23, 10:39 AM
#550
Racer
Thread Starter
Apparently Elon tweeted that it could be run at 39 PSI for comfort with only a 2% range hit. But yeah I was looking on the Tesla forum and a shocking amount of people are running them at lower than recommended tire pressures. Even some running at higher than recommended for better efficiency.
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AMIRZA786 (12-10-23)
12-10-23, 10:51 AM
#551
Lexus Champion
10 psi lower than recommenced is dangerous. You won't notice in normal driving but if you are ever forced into an evasive maneuver you'll find out.
12-10-23, 11:11 AM
#552
Lexus Champion
Apparently Elon tweeted that it could be run at 39 PSI for comfort with only a 2% range hit. But yeah I was looking on the Tesla forum and a shocking amount of people are running them at lower than recommended tire pressures. Even some running at higher than recommended for better efficiency.
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signdetres (12-10-23)
12-10-23, 11:14 AM
#553
Lexus Champion
You probably get better range or whatever with how they recommend it.
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signdetres (12-10-23)
12-10-23, 11:21 AM
#554
Lexus Champion
12-10-23, 12:27 PM
#555
Lexus Fanatic
It's no longer in the fuel door now. There's a color chart there that explains what the different colors mean for the charging status light. There are now (somewhat confusingly) multiple stickers by the door. It took a sec to figure out what pressures I actually need to be running
The following 2 users liked this post by SW17LS:
AMIRZA786 (12-10-23),
signdetres (12-10-23)