2.0T Wheel upgrade specs

[sean888]

Hi Everyone,

I've just ordered 2.0T Stinger and I'm staying in Singapore. It's comes with the 18" wheels, non staggered and no brembo. I believe it is 18x8 +45 225/45/18. It is not flushed with the fender. I'm intending to replace with aftermarket 18 or 19" wheels and also upgrade the brakes. I need some advice on what specs of 18" and 19" I can go for to have a flush look and also at the same time give me options to install a big brake kit.

18"
Front 18x8.5 +30? 225/45/18?
Rear 18x9 +30? 255/40/18?

19"
Front 19x8.5 +30? 225/40/19?
Rear 19x9 +30? 255/35/19?

I am hoping someone can advise so that I can start to do wheels shopping in Singapore. Please help.

The major issue is your brake plan. As you probably know most after market wheels will not clear big brake packages such as Brembos because of the caliper thickness. So if you are planning to upgrade the brakes you are going to have to ensure you select a wheel that has been designed by the manufacturer to fit big brake packages. It is the basic wheel design that determines if the wheels will clear big brake fitments (not wheel offset) so don't assume that every wheel with a significantly lower offset than stock is going to clear the brakes you have planned.

If I were you I would stick with the 19 inch plan and 225 40 19 and 255 35 19 tyre sizes KIA uses on some of the stinger models like the 6 cyl GT. If you order a set of the 19 inch wheels KIA uses on the top of the line GT fitted with the brembo brakes you will be getting a wheel that clears the Brembos and offsets that work for tyre clearance on body and suspension. You can have them painted any colour you want if you don't want to keep the stock colour. When updating the brakes just use the same brembo brake package KIA uses with the 19 inch wheels and you won't have any issues to worry about.

If you want to go aftermarket wheels fine but when you get the car check how much space you have to play with on the outside on the rear where you are using a wider tyre. Using a lower offset wheel than the stock wheel used on the GT with the 255 rear tyre will push the 255 tyre out further and closer to the edge of the rear guard. How much depends on the offset you go with.

 

[StingerBee]

The major issue is your brake plan. As you probably know most after market wheels will not clear big brake packages such as Brembos because of the caliper thickness. So if you are planning to upgrade the brakes you are going to have to ensure you select a wheel that has been designed by the manufacturer to fit big brake packages. It is the basic wheel design that determines if the wheels will clear big brake fitments (not wheel offset) so don't assume that every wheel with a significantly lower offset than stock is going to clear the brakes you have planned.

If I were you I would stick with the 19 inch plan and 225 40 19 and 255 35 19 tyre sizes KIA uses on some of the stinger models like the 6 cyl GT. If you order a set of the 19 inch wheels KIA uses on the top of the line GT fitted with the brembo brakes you will be getting a wheel that clears the Brembos and offsets that work for tyre clearance on body and suspension. You can have them painted any colour you want if you don't want to keep the stock colour. When updating the brakes just use the same brembo brake package KIA uses with the 19 inch wheels and you won't have any issues to worry about.

If you want to go aftermarket wheels fine but when you get the car check how much space you have to play with on the outside on the rear where you are using a wider tyre. Using a lower offset wheel than the stock wheel used on the GT with the 255 rear tyre will push the 255 tyre out further and closer to the edge of the rear guard. How much depends on the offset you go with.

Sean, again thank you for the good advice. What I understand here in Singapore is that KIA do not allow customization on our orders. Which means upgrading to the 19" wheels and getting the brembo is not an option. They want to streamline the orders.

Anyway I'm not a big fan of stock brembo. I am driving a subaru sti which comes with 4 pot brembo and 330mm rotor. The performance is just not as good as I expected it. The GT brembo seemed better. I've test drive the GT and floored the car hard and the brake works fine. But then it is still hard to judge as the brakes are not heated up yet.

Yes I do understand the design of the wheels is important to clear big brakes. Need to source for those with spokes that kind of spiders out to prevent hitting the caliper. I use Advan RS and Rota Fighter with such design.

Also I've decided not to go for staggered set up. 2L comes with non staggered and I'm going to maintain. This will also allow rotation. Probably just going up to 19" wheels with 9" width. 255/35/19 tires to maintain overall diameter as you mentioned. Offset will probably be about +40 (vs stock +34) which pushes out wheel by about 7mm which I believe will not be hitting the fender. If during test fit will hit means have to reduce offset to +42 or reduce width of rim to 8.5".

 

[mev202]

This is nonsense which is why people on forums like this confuse with their unqualified mis information and ignorant one liner comments which explain nothing.

When upgrading wheels and tyres there are a few critical issues to cover aside from the usual suspension, brake and body clearance issues............

1. You need to keep the replacement tyre as close as possible in diameter as the original equipment tyre size fitment. So you go down in tyre profile from say 45 to 40 or to 35, as you go up in wheel diameter from say an 18 to 19 inch. By keeping the replacement tyre diameter the same or very close to the original fitment you retain your speedo accuracy and you are not affecting any systems on the car that are measuring wheel speed.
So for example, if replacing your 225 45 18 stock wheels +tyres with a wider rear in 255 35 19 these are the diameters:
Stock TYRE on stock 18 inch wheel: 225 45 18 659 mm tyre diameter
Replacement TYRE on new 19 inch wheel: 255 35 19 661 mm tyre diameter ( A 255 40 19 at 687 mm is too large).

2. You need to keep the tyre diameters front and rear as close as possible (as are all the stock Stinger 18 and 19 inch tyre sizes used across the model variants). If there is a significant enough variation between front and rear tyre diameters - unless specifically set up that way by the manufacturer's original tyre and wheel choices and programming - the wheel sensors will record different rotation speeds front and rear and it will play havoc with the stability control program on the car.

If you are not too concerned about your speedo accuracy, and you are not breaking any local laws, you can always go with a slightly larger tyre diamater than stock provided there are no clearance issues but you need to ensure that your front and rear tyre diameters are closely matched.

Dude, check your attitude.

 

[sean888]

I won't be "checking" anything Mr Misinformation.

When you don't know what you are talking about keep your wrong advice to yourself .

 

[mev202]

I

I won't be "checking" anything Mr Misinformation.

When you don't know what you are talking about keep your wrong advice to yourself .

Bless. Such a big man behind a keyboard.

 

[mev202]

I won't be "checking" anything Mr Misinformation.

When you don't know what you are talking about keep your wrong advice to yourself .

There there. Good little boy. Now go run along and play, preferably on the motorway.