Hyundai Genesis Forum banner

1 - 6 of 6 Posts

·
Registered
Joined
·
2,795 Posts
Discussion Starter #1
I'm trying to size tires for the rims I want but I'm uncertain how the TC works.

Do they just need to be a set difference in overall size, a different diameter in %?

If this is not done correctly will the TC just click on as you drive down the road at normal speeds?

Please explain in detail how this works.

Thanks.
 

·
Registered
Joined
·
1,812 Posts
From what I've read here on the forum, the rear tires need to be taller than the front (larger diameter/circumference). If the rear tires are the same height or smaller than the front, the car perceives this as wheel spin and in turn activates the traction control.

Some people have claimed to have no issues with all four tires the same on the car but I've also read that someone had issues above 80 mph with the aftermarket tires sizes they chose, traction control engaging. This thread...http://www.gencoupe.com/wheels-tires-brakes/45450-traction-control-wtf.html whether it was proven to be the tires or not I can't say...but in this person's case the difference front to rear was 0.8% .

Using the calculator I provided in the link below, (assuming it works correctly) and using the stock 19" tires sizes (F 225/40/19 - R 245/40/19), there is a 2.4% difference between the front and rear. With the stock 18" tires (F 225/45/18 - R 245/45/18) there 2.7% difference. So I think it's safe to say that anywhere in between you should be ok.

Calculator (bottom of page in the link)...Tire size calculator
 

·
Back to Stock!!
Joined
·
952 Posts
I'm trying to size tires for the rims I want but I'm uncertain how the TC works.

Do they just need to be a set difference in overall size, a different diameter in %?

If this is not done correctly will the TC just click on as you drive down the road at normal speeds?

Please explain in detail how this works.

Thanks.
How much wider ?

9 front and 9.5 rear? 255 front 275 rear and drop 5 form the side wall in both
 

·
Registered
Joined
·
2,221 Posts
simple, get 18" fronts and 19" rears! problem solved.
but seriously, glad you asked cuz i wasn't even aware that TC would be an issue for choosing tires so thanx.
 

·
Registered
Joined
·
43 Posts
Has anyone tried a good 18" wheel and R compound tire set up for track use?

I'm trying to get a feel for what wheel sizes I need for a possible 245-265/18 front and 275-295/18 rear in the Mich pilot sport cup type tires, but the whole % circum difference affecting TC is messing with me, then throw in the whole wheel offset variable makes my head hurt......
 

·
It is not red. Not red..
Joined
·
5,706 Posts
According to Discount Tire, in their vendor forum,
Rear tire should be at minimum .75inch taller than front.

I would say and less than that (% makes more sense to me) will activate TCS more often/easier and more difference will keep it at bay under light wheelspin.

Unless someone has cracked the programming, this is all just trial, error, and hearsay though.
 
1 - 6 of 6 Posts
Top