Replacing Stock rims and tires

[Flex59]

Bernie: On a non-related issue. I have installed the "Wing" emblem on the trunk, hubcabs (18"), White LED lights on license plate. But, I would love to find the "Wing" emblem for the steering wheel. KAI sells the whole center with airbag for $295.00, but, I was wondering if you know if any other place sells just either an oval cap with the "wing" emblem to place over the "H" on the steering?

Thanks,

Flex59

 

[DieselHybrid]

Crepen-

Why do car makers continue to place larger and larger wheel/tires on their cars? Simple- "looks" and desire drive the market.

It's the underlying reason behind why "wings," "fake" hood scoops and double exhausts (among many other useless appendages) are slapped onto vehicles. In fact, many "wings" actually detract from the original vehicle's aerodynamics.

Notice, however, that purpose-built race cars (from Porsche, BMW, Ferrari, etc.) completely do away with functionless "accessories." Yes, they may use larger forged wheels than stock- but mostly to allow the fitment of larger brakes.

"Lastly, whether it be engineering or market forces, try finding a 285mm wide 17" tire."

Why would you want this combination? To stay within a percentage of the stock Genesis wheel/tire radius (17" ~ 33.97cm, 18" ~ 34.61cm) you would need either a: 245/50/17 or a 255/50/17- depending on which radius you prefer.

Personally, I like to preserve the original look of the car- so 17" is the smallest diameter while 18" is the largest diameter I would go with. Whatever size happens to have the lightest, strongest wheel at the best price would be the one I would choose. Looks are secondary.

Anyone know where I can find light, forged 17" wheels that will fit the Genesis? Tire Rack only seems to recommend 18" wheels for the Genesis.

Thanks in advance.
Peace.

 

[Lord_Nikon]

Anyone know where I can find light, forged 17" wheels that will fit the Genesis? Tire Rack only seems to recommend 18" wheels for the Genesis.

Thanks in advance.
Peace.

We will probly have to wait and see, but it has more to do with caliper clearance than anything I do think...but then again my Evo has 13in rotors and Brembos with 17in rims stock. so who knows.

 

[musher51]

My intention would be to buy the lightest forged 17" wheels that would fit the Genesis.

Tirerack.com has a lot of 17" wheel choices. Here's the set of Enkei NT03s I bought for winter wheels ($235/ea), but there's a LOT more to choose from.

http://www.genesisowners.com/hyundai-genesis-forum/attachment.php?attachmentid=171&d=1226959087

 

[VaiFan]

Don't forget that when manufacturer's like Porsche put larger wheels on a car, the amount of R & D that goes in to designing the suspension to work with that particular wheel and tire combination is very extensive.
Also, I am sure that BBS and other wheel manufacturer's that Porsche uses are required to build a very light wheel for them.

If you just go out and put 20's on a Genny, it's not going to work as well as a smaller lighter wheel.

 

[Bernie]

Flex59:

I finally settled on purchasing the 19"x8.0" TSW Estoril chrome wheels with low profile P245/40YR19 Falken FK42 tires from Bigwheels.net. The TSW wheels are identical in appearance to the picture of Petrol Nixon wheels I posted earlier. The wheels came in US$163/wheel and the tires were US$205/tire. Mounting and balancing was free and shipping to Canada came in a $260.

I would say that the weight of the new 19" wheel/tire combination is about 5-7 lbs greater than the OEM 18" wheel/tire. The ride is slightly harsher; I attribute this primarily to the low profile tires. Cornering performance seems to be better with the new wheels/tires. I didn't go all the way with 20"x10" wheels and P275/40YR20 tires for fear of making the ride overly harsh. I think my choice ended up being a good balance between improved appearance and ride performance.


Bernie

 

[MADDMOE]

i have a question when u changed your rims did u install TPMS air valve stems or not & if not do u get a light coming on your dash...?

 

[Bernie]

I can only answer for Genesis Sedans delivered in Canada.

There is no active TPMS sensors for Genesis delivered in Canada (e.g. no sensors on the valves.) I verified this with my dealer before I bought a new set of rims. Since then, I have swapped in a new set of rims, and the TMPS system does not complain. Since the car is already equipped with a variety of sensors for the Electronic Stability Control, I believe that passive tire pressure monitoring (passive TPMS) is instead achieved by detecting small differences in wheel rotation rates (this can easily be done when traveling in a straight line under no or low acceleration, but is more difficult to detect under more varied driving conditions such as turns and high acceleration.). The only advantage of passive TPMS is the detection of a condition whereby ALL 4 tires are underinflated by the same amount - a very unlikely scenario. All and all, I don't mind it if that rather unusual condition goes undetected.

I was glad when I found that we have passive TPMS in Canada, particularly in Quebec where we are mandated by law to install winter tires between December and March. Active TPMS is a royal pain for many reasons
a) cost of the TPMS sensors (mucho $$$)
b) TPMS sensors are rather fragile ... changing tires on the same set of rims can bring about failures.
c) even if you have two complete set of wheels, each equipped with their own active TPMS sensors, you're still not out of the woods. You still have to go to the dealer so that the car can be reset to recognize the alternate set of sensors (winter vs summer set) via radio signals between the car and the four TPMS sensors.

From what I can tell on the other posts on this forum, I believe that Genesis delivered in the US have active TPMS. So if you live in parts of the US with as much snow as Canada, then you'll have to live with a), b) or c)

Bernie


Bernie

 

[MADDMOE]

i live in NYC but i dont drive my Genesis in the snow or rain for the matter i have my 92 nissan max for that, i would like to get a new set of rims in the summer but thinking about not putting any TPMS stems on the rims at all , so im wondering if i will just get a TPMS icon appearing on my dash ...? Im one of those people who inspect thier car every day b4 i pull off so i would know if my tires were low on pressure or not i really dont need the TPMS to tell me that

 

[Bernie]

The car expects the TPMS sensors to periodically send signals to the car about the health of the sensors and the sensed tire pressure. If the car doesn't receive ANY signals, it will eventually flag this as a error with the TPMS system and that will show up as an (annoying) light on the center dash above the steering wheel.

I read about this topic on various posts in other car forums. The Genesis will probably exhibit the behavior I outlined above.

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[Cubano]

Does anyone know how much the OEM wheels on the 4.6 weigh? I just purchased a 4.6\technology package, black on black a couple of weeks ago, and I'm lloking to put custom 20" wheels with 255\35 tires. Ideally I would like to keep the wheel\tire combo at the same or lower weight than the stock. I was looking at TSW wheels as they are local here to Southern California and have a good reputation, but I wanted to compare the weights with the stock wheels first. By the way, what is everybody's opinion of the Avarus wheel brand? I think the AV4 in the black machined finished would look very cool on the Genesis (I guess they weigh 35.5 lbs, so they are on the heavier side).

Thanks

 

[Mark_888]

I can only answer for Genesis Sedans delivered in Canada.

There is no active TPMS sensors for Genesis delivered in Canada (e.g. no sensors on the valves.)

TPMS is required by law in the US for 2008 and later cars. I suspect the reason that it is not required in Canada is Boyle's Law, which states that the pressure of a gas is inversely proportional to its temperature. What this means is that if the ambient temps get really cold, the tire pressure will decrease and you will get warning messages from the TPMS system until the tires reach operating temps (due to friction created by the tire tread moving rapidly as the car moves).

I live in a fairly warm-to-moderate climate, and I got some low pressure readings on cold day this past winter, so I can imagine what it would be like in Canada. It would get to the point were people would ignore the system because it was so sensitive to temperature.

 

[MADDMOE]

well i was looking at some gianna chrome wheels (blitz) & called the company up to ask them how much they weighed & was told 40lbs (heavy i know) so now im trying to find out the weight of the stock rims on my 4.6 to find out the difference.......any help

 

[Bernie]

The only help I can give you is the experience I have had when I replaced the Genesis stock 18" rims + Dunlops with a set of 19" TSW Estoril chrome wheels with Falken P245/40R19 tires. (PS: I don't have a weight scale). When I removed one of the stock wheel/tire, I held it in my left arm while holding the new wheel/tire in my right arm; this allowed me to do a better weight comparison rather than holding each wheel separately in sequence. I would say that the 19" rim/tire combination "felt" about 5-7 lbs heavier to me.

As I mentioned in another thread, the 19" wheel/tire combination is within 2% of OEM wheel/tire diameter. I don't think the additional weight is playing much of a factor in the feel of the suspension. The ride is somewhat "firmer" but I attribute this due to the lower profile tires, not the added wheel weight. Cornering performance seems to be better with the new wider/lower profile tires. I think my choice ended up being a good balance between improved appearance and ride performance. Didn't quite have the "guts" to go all the way up to 19"x10" Estoril rims which have a wider chrome lip or the 20" rims for that matter.

http://genesisowners.com/hyundai-genesis-forum/album.php?albumid=119&pictureid=828

 

[muffinman]

Just think how much more rotational mass you would reduce by going to smaller diameter forged wheels!

When I see mega-sized wheels on a car I think, "Poor guy has no idea how those bling wheels are hurting his performance (acceleration, deceleration, fuel economy)- not to mention the added stresses on the vehicle's dynamic components."

My intention would be to buy the lightest forged 17" wheels that would fit the Genesis. Sure, it might not look as "bling" as other rides- but I'm more interested in function over something as fickle as "bling."

Freedom of choice also includes the freedom to be ignorant of the laws of Physics. But to each his own.

Peace.

It's funny how everyone with little knowledge of car tuning / modding keeps saying this, yet quality, forged wheels remain significantly LIGHTER, LARGER, and STRONGER than most OEM wheels...

Weird how one assumes that people with large rims only care about the bling and disregards functionality. If you want to roll around in your cast 25-28 lb stock 18" rims, that's fine but please don't knock another driver for driving around on attractive, quality, strong 21lb forged 20" rims

 

[Bobby41909]

You guys are so funny...the Genesis is a luxury sedan NOT a 600 HP Corvette. This car is all about looks, utility with some sporty performance. If not, we would all be buying a serious performance car (i.e Corvette ZR-1, Challenger SRT, Camaro SS, Shelby Mustang, Porsche Carerra GT). Oh and BTW all those high HP cars come stock with forged aluminum 20's.

As for the weight issue. I think everyone if forgetting that large tires are HEAVY.

 

[Bobby41909]

 

[Disaster]

Wider tires will always be heavier...because there is more rubber and rim, everything else being equal. However, lower profile tires (bigger rims) might not be necessarily be heavier because you are trading off less sidewall rubber for more alloy. Depending on how thick and heavy the original sidewalls were, vs. how heavy the alloy is, will tell you if you end up better or worse.

 

[motorsportsauthority]

Maximum size is 22".

 

[zap13]

I have an opportunity to buy a set of OEM 18 inch wheels from the Genesis coupe. I need some info...do they need spacers to fit properly? Anyone else out there have a similar setup?