Smart 453 Unstable at >70mph - Smart Car Forums
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post #1 of 42 (permalink) Old 02-24-2017, 12:12 PM Thread Starter
 
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Smart 453 Unstable at >70mph

Hi,

Recently leased a Smart 453 Passion, it's pretty good at city driving but when I get to the Freeway and start cruising at more than 70mph, the car feels unstable, and it feels like the car handling is at its worst.

Anybody else feels this way?

Btw, I will be lowering the car with Madness springs, hopefully, I will get better handling after the install.
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post #2 of 42 (permalink) Old 02-24-2017, 01:05 PM
 
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I've never noticed anything, and I peg mine at the speed limiter on the regular. That said, I do have the Sport Package. What wheels and tyres do you have?

And welcome!!!
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post #3 of 42 (permalink) Old 02-24-2017, 01:09 PM
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Quote:
Originally Posted by radzm View Post
Hi,

Recently leased a Smart 453 Passion, it's pretty good at city driving but when I get to the Freeway and start cruising at more than 70mph, the car feels unstable, and it feels like the car handling is at its worst.

Anybody else feels this way?

Btw, I will be lowering the car with Madness springs, hopefully, I will get better handling after the install.
Visit your local dealer and have them look into it. Otherwise, it might just be your opinion and might take you some time to adjust to the tiny dimensions and short wheelbase. The smart 453 is improved over its 451 predecessor which regularly suffered from what you complained about particularly from new smart car drivers. Seasoned folks realized though that most of the complaints were imagined, not realizing that the car is naturally twitchy with its handling which can be intimidating to some drivers.
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post #4 of 42 (permalink) Old 02-24-2017, 01:30 PM
 
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Mine has always felt very stable in the 70-85 mph range.
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post #5 of 42 (permalink) Old 02-24-2017, 02:20 PM
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Skinny front tires, wind, short wheelbase, and uneven surfaces don't make for an uneventful highway experience. Getting wheels and tires the size of the rear wheels and tires will help a lot especially in the wind.

edit.....This applies to the 451 but not necessarily to the 453.

Last edited by DrKillerBee; 02-24-2017 at 06:46 PM.
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post #6 of 42 (permalink) Old 02-24-2017, 02:34 PM
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Skinny front tires, wind, short wheelbase, and uneven surfaces don't make for an uneventful highway experience. Getting wheels and tires the size of the rear wheels and tires will help a lot especially in the wind.
451 4-square logic may not transfer to the 453 as the suspension is totally different?

The 453 loaner I had was put through the paces from city streets to highway "limits" and it felt much more stable than a 451 with the OEM stagger? My suggestion on getting rears for the front - proceed with caution.
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post #7 of 42 (permalink) Old 02-24-2017, 04:05 PM
 
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I've had no such issues. I think high-80s is the fastest I've been.
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post #8 of 42 (permalink) Old 02-24-2017, 04:21 PM
 
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Originally Posted by DrKillerBee View Post
Skinny front tires, wind, short wheelbase, and uneven surfaces don't make for an uneventful highway experience. Getting wheels and tires the size of the rear wheels and tires will help a lot especially in the wind.
Not really the case with the standard 453. Of course a suspension tweak and slightly larger tires does improve handling on the 453 even more.
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post #9 of 42 (permalink) Old 02-24-2017, 04:26 PM
 
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Goes right back to the original intended use of the car and its design.
It was designed as a two seated European City Car with a 6 foot wheelbase that was capable of highway speeds. If you look around Europe you find small cars and SCOOTERS everywhere very few Harleys or Cadillacs.
I don't believe the smart fortwo was ever thought of or designed as a turnpike or autobahn cruiser.
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Last edited by Jo e Lefors; 02-25-2017 at 09:25 AM.
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post #10 of 42 (permalink) Old 02-24-2017, 04:41 PM
 
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Which is stupid in my, and many others, opinion. It's plenty capable of high-speed highway travel. Took my 451 on a 9-hour drive to North Carolina, doing i believe like 75-80 almost the entire way.
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