2015 Gen Wheel & Tire Question

[texasjack]

I purchased a new 15 Gen and I went on a round trip from Ft Worth, TEXAS to Bentonville, Ar. I ambeat after bouncing 800 miles.
Prior to leaving my dealer did the Hankook to Mich Swap.

Some IDIOT engineer called out 45 ratio tires for a luxury car.

This car rides like the axles are welded to the frame.

It is Hyundai number 14 for me.

My question is will a 16 or 17 inch wheel clear the brake components?

If so I will purchase a set of wheels and tires with a decent ratio to improve the ride otherwise I will dump this beautiful car.

Thank you

Jack

 

[Nikgen]

I purchased a new 15 Gen and I went on a round trip from Ft Worth, TEXAS to Bentonville, Ar. I ambeat after bouncing 800 miles.
Prior to leaving my dealer did the Hankook to Mich Swap.

Some IDIOT engineer called out 45 ratio tires for a luxury car.

This car rides like the axles are welded to the frame.

It is Hyundai number 14 for me.

My question is will a 16 or 17 inch wheel clear the brake components?

If so I will purchase a set of wheels and tires with a decent ratio to improve the ride otherwise I will dump this beautiful car.

Thank you

Jack

??? The 245/45R18's provide a really nice ride - I've got 10k miles on mine and have taken several 800 mile round trips on all sorts of roads. There must be something wrong with your car as your description of the ride quality with the 18" tires is not in line with the experience of any reviews I've read, let alone my personal experience or the experience of most I've seen post here?

 

[FastDEW1]

What is the tire pressure set to?

 

[Nikgen]

What is the tire pressure set to?

Good point - some have reported picking up the car from the dealer with 40-45 psi instead of the recommended 33 psi (lazy dealers not properly prepping as cars are shipped overinflated). I keep mine at 33 psi (cold) year round - which means adding or bleeding as the seasons change and the ride is great.

 

[Mark_888]

Good point - some have reported picking up the car from the dealer with 40-45 psi instead of the recommended 33 psi (lazy dealers not properly prepping as cars are shipped overinflated). I keep mine at 33 psi (cold) year round - which means adding or bleeding as the seasons change and the ride is great.

Cars are shipped from Korea with 40-45 psi. This is standard procedure for cars shipped from Asia (including Japan).

However, OP says dealer replaced tires with the Michelin's so that sounds weird. But the dealer service personnel may have over-inflated the replacement tires also. The recommended tire pressure is located on a sticker in door jam of the driver side door.

 

[Midnightsun]

Something is wrong for sure as the Gen 2 Genesis rides on a cloud, quiet and subdued comparable to an E class Mercedes any day. Bring it back to the dealer and have them check it out, may be more than a bad tire but definitely has nothing to do with the tire size.

 

[DFWGenny]

Just out of curiosity, what was your previous car? If you came out of a old style Caddy DTS or Lincoln Town Car, you are going to "feel" the road more than those type of cars in a Gen 2 Genesis. If that is the case, you might be more happy with the Equus.

 

[Mark_888]

Almost all cars have stiffer suspensions compared to 5-10 years ago, trying to come closer to a German-type suspension feel. Some people are even complaining that the Lexus LS460 is now too stiff (and not just talking about the LS460 F-type).

 

[ksoze]

Almost all cars have stiffer suspensions compared to 5-10 years ago, trying to come closer to a German-type suspension feel.

German-type suspension feel and more importantly the resultant control that comes with that.

BMW. Audi and others were able to dial in the right blend of suspension, shocks, tires and steering etc. to actually create a "feel" that became associated with their cars. For those who have driven land yachts, the change can be jarring, but the ability to drive safely and with more control is enhanced when some road feel is transmitted into the cabin and steering wheel. The nuance of how that is done is part of the magic.

 

[KENSGEN]

Good point - some have reported picking up the car from the dealer with 40-45 psi instead of the recommended 33 psi (lazy dealers not properly prepping as cars are shipped overinflated). I keep mine at 33 psi (cold) year round - which means adding or bleeding as the seasons change and the ride is great.

Yep. My lazy dealer did not lower the tire inflation at purchase. So when I got home they were at 49 PSI! I set them at 35 for the winter, but they jump to about 39 PSI now when warmed up and I can feel the road more. I need to lower a few PSI for the summer. They actually held the same pressure all winter, and it was cold in NJ!

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[Mark_888]

Yep. My lazy dealer did not lower the tire inflation at purchase. So when I got home they were at 49 PSI! I set them at 35 for the winter, but they jump to about 39 PSI now when warmed up and I can feel the road more. I need to lower a few PSI for the summer. They actually held the same pressure all winter, and it was cold in NJ!

According to the 2015 owners manual, the recommended tire pressure for the Genesis is as follows:

• 2015 AWD - 19" wheels/tires, front and rear, 35 PSI
• 2015 RWD - 275/35R19 tires, rear wheels only, 35 PSI
• 2015 All other wheels/tires - 33 PSI

I believe this means that on a 2015 5.0L with RWD, the fronts should be 33 and rears 35 PSI.

These are the "cold" tire pressures, which means the pressure should be measured at 70 F ambient temperature and the when car has not been driven for at least 4 hours.

Note from owners manual: It is permissible to add 3 psi (21 kPa) to the standard tire pressure specification if colder temperatures are expected. Tires typically loose 1 psi for every 12°F (-11°C) temperature drop. If extreme temperature variations are expected, re-check your tire pressure as necessary to keep them properly inflated.

 

[texasjack]

My previous car was an Azera, the tire pressure is 35 PSI, the tires were swapped last week.

I am 75+ and a disabled Vet with several back surgeries.

I am going to install a set of 225X60X17 tires on it a attempt to improve my harsh ride.

The car only has 2k miles on it.

 

[markpoisson]

My previous car was an Azera, the tire pressure is 35 PSI, the tires were swapped last week.

I am 75+ and a disabled Vet with several back surgeries.

I am going to install a set of 225X60X17 tires on it a attempt to improve my harsh ride.

The car only has 2k miles on it.

Thanks for your service. I too am a veteran from a different era.

As for the ride, I am am pretty sure the tires you mention may cause problems with speedometer and other electronics (see attached - taken from http://www.roadkillcustoms.com/hot-...Tire-Size-Change-Calculator.asp#axzz3aS5g58sU ).

That said, you would have over an inch more of rubber in the sidewall. Maybe this will give a better ride. I am coming from a G35S and the Genesis is much softer than that car. Good luck.