Front wheel hop
Thread Starter
Intermediate
Joined: Sep 2024
Posts: 26
Likes: 19
From: NE Ohio, USA
Front wheel hop
Hi all, did a quick search and didn’t see anything on this…….First time Porsche owner, have a 992.2 with less than 100 miles on the clock.
At very low speeds with the wheel at near full lock, i get a pronounced hopping from the front tires. Normal? I’ve got the 20/21 wheel option.
I’ve got garages that are on the side of the house so after backing out of the garage i have to make a pretty tight 90 degree turn to the left to head down my driveway and have experienced the hop if I have the wheel near full lock. I’m assuming it’s due to the wide front tires. Any thoughts?
thanks in advance,
Brian
At very low speeds with the wheel at near full lock, i get a pronounced hopping from the front tires. Normal? I’ve got the 20/21 wheel option.
I’ve got garages that are on the side of the house so after backing out of the garage i have to make a pretty tight 90 degree turn to the left to head down my driveway and have experienced the hop if I have the wheel near full lock. I’m assuming it’s due to the wide front tires. Any thoughts?
thanks in advance,
Brian
Last edited by brian26339; Nov 28, 2024 at 10:46 PM. Reason: details
Instructor
Joined: Sep 2023
Posts: 111
Likes: 89
Sounds normal. Ackermann effect. There was another thread on this a few days ago.
The Ackermann effect is a steering system phenomenon that occurs when the inside wheel of a vehicle turns more than the outside wheel while turning. This causes the wheels to travel at different speeds and distances, which can make the vehicle lurch or skip while turning.
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Joined: Aug 2010
Posts: 2,578
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From: Philly suburbs
it is a common thing with newer Porsches/911s that is much less noticeable/absent on older variants. I can't tell if Porsche designed more or less (I suspect less though) ackerman steering angle than the geometric amount but it is common and not a real problem. That said, it is annoying.
A couple of additional aspects: 1) it is tire dependent - some tire brands do it worse than others, 2) it gets worse as tires wear - newer tires are better than old, 3) it is temperature dependent - more pronounced in cold temps than warm. Basically all down to how much tread squirm the tires allow. Low tread flex/squirm = bad hop.
A couple of additional aspects: 1) it is tire dependent - some tire brands do it worse than others, 2) it gets worse as tires wear - newer tires are better than old, 3) it is temperature dependent - more pronounced in cold temps than warm. Basically all down to how much tread squirm the tires allow. Low tread flex/squirm = bad hop.
Racer
Joined: Jan 2021
Posts: 366
Likes: 256
From: UK
Hi all, did a quick search and didnt see anything on this
.First time Porsche owner, have a 992.2 with less than 100 miles on the clock.
At very low speeds with the wheel at near full lock, i get a pronounced hopping from the front tires. Normal? Ive got the 20/21 wheel option.
Ive got garages that are on the side of the house so after backing out of the garage i have to make a pretty tight 90 degree turn to the left to head down my driveway and have experienced the hop if I have the wheel near full lock. Im assuming its due to the wide front tires. Any thoughts?
thanks in advance,
Brian
At very low speeds with the wheel at near full lock, i get a pronounced hopping from the front tires. Normal? Ive got the 20/21 wheel option.
Ive got garages that are on the side of the house so after backing out of the garage i have to make a pretty tight 90 degree turn to the left to head down my driveway and have experienced the hop if I have the wheel near full lock. Im assuming its due to the wide front tires. Any thoughts?
thanks in advance,
Brian
