Tire sidewall questions and discussion

[Cobra Jet]

Everyone discusses upgrading tire sizes, treadwear concerns, best optimal brand tire for their region, summer vs all season, drag race, road race or auto-x tires, etc. etc etc....

But I have not seen any “tire tech” regarding tire side wall comparisons or “performance”.

When buying any brand/size of replacement tire, should’nt the sidewall properties (flexibility & strength) be a consideration and just as important to safety?

Is there such a guide to compare sidewall strength when buying new tires? Not looking at the sidewall height or profile figures, I mean like actual performance to the stock sidewall that was supposedly “matched” to the vehicle’s handling, safety and performance based on body and chassis design.

I’ve read threads proclaiming Brand-X tire is superior to Brand-Y, but then I see later postings of folks who bought said tires and complaining of the vehicle feeling soft when hitting up curves/turns aggressively or when over taking other vehicles on the highway at speed and merging back into a lane that the rear swings or feels like mush... isn’t that all because of the possibility that the sidewall is too compliant (soft?) versus the chosen sidewall in stock form?

Tire experts join in...

Sponsored

 

[chedder]

Everyone discusses upgrading tire sizes, treadwear concerns, best optimal brand tire for their region, summer vs all season, drag race, road race or auto-x tires, etc. etc etc....

But I have not seen any “tire tech” regarding tire side wall comparisons or “performance”.

When buying any brand/size of replacement tire, should’nt the sidewall properties (flexibility & strength) be a consideration and just as important to safety?

Is there such a guide to compare sidewall strength when buying new tires? Not looking at the sidewall height or profile figures, I mean like actual performance to the stock sidewall that was supposedly “matched” to the vehicle’s handling, safety and performance based on body and chassis design.

I’ve read threads proclaiming Brand-X tire is superior to Brand-Y, but then I see later postings of folks who bought said tires and complaining of the vehicle feeling soft when hitting up curves/turns aggressively or when over taking other vehicles on the highway at speed and merging back into a lane that the rear swings or feels like mush... isn’t that all because of the possibility that the sidewall is too compliant (soft?) versus the chosen sidewall in stock form?

Tire experts join in...

 

[chedder]

Look at sidewall ply in specs for any brand tire. 2 ply soft, 4 ply stiff. That easy.

 

[BmacIL]

This is a deep, deep rabbit hole. The simplest answer is as you ramp up in category seriousness (dry weather performance), sidewalls get stiffer. Between brands it will vary, depending on their goals for the tire.

 

[NightmareMoon]

Tire Rack's comparisons for max and high performance tires often discuss tire sidewalls if its a factor. Its mostly a factor if you're trying to twist a street tire into a competition tire. Tires being used for their intended purposes are usually built with a suitable sidewall. If you're using a soft sidewalled street tire aggressively, increasing the air pressure can help compensate up to a point.

 

[Apex Wheels]

Another important factor is making sure you're using the tire on a correctly sized wheel. A good rule of thumb for performance-oriented driving is to have the tread width of a tire either the same or up to 1 inch narrower than the wheel width. This ensures that the sidewall is receiving the proper support it needs to respond and perform at it's best. It will also make the most use of the tread and not allow the outer parts to bulge and not contact the surface.

For example, if you have two of the same model tires and take a 285 width and slap it on a 9.5" wide wheel and then compare the actual contact patch to that of a 275 on a 10", the 275 will actually be putting more tire on the ground.

Different companies make different feeling tires as others have mentioned, and generally speaking the more "aggressive" the tire is, the more feedback it will provide as the construction will be optimized for that purpose. I.e. Summer tires are going to be more responsive than Winter tires (sizes being equal).

- Cory

Sponsored