Which tire size for '12 R-Spec?

[wd40]

Yep. 255s are too wide for the wheel. You may get some sidewall slop and the manufacturer warranty on the tire will be voided the second it's mounted.

Don't know what issues you may have with plus zero sizing, but the 255/40/19 is listed as a plus zero option for replacement.

View attachment Tire Size Calculator 255:40:19.pdf

 

[Fast55]

What would be the purpose. The speedo won't be affected by a wider diameter tire. And you only need one set of tires and there are plenty of good options w/out having to make a tire purchase even more complicated and expensive.

You don't understand the purpose, really? Generally, wider = more traction. Keeping the diameter the same is important for other reasons beyond speedometer accuracy and I can't see anyone wanting to make the speedo less accurate. The 255/45/18 has been used to replace the stock 235/50/18's on cars with 18" wheels (same width as 255/40/19). The 255 tire is the maximum recommended width on stock rims for most tire manufacturers and should not void any warranty.

 

[brfatal]

Don't know what issues you may have with plus zero sizing, but the 255/40/19 is listed as a plus zero option for replacement.

View attachment 2865

Not sure what you're saying, but your attachment shows what we already know, that the rolling diameter is very close to stock. But that has nothing to do with how well it fits on the wheel.

You don't understand the purpose, really? Generally, wider = more traction. Keeping the diameter the same is important for other reasons beyond speedometer accuracy and I can't see anyone wanting to make the speedo less accurate. The 255/45/18 has been used to replace the stock 235/50/18's on cars with 18" wheels (same width as 255/40/19). The 255 tire is the maximum recommended width on stock rims for most tire manufacturers and should not void any warranty.

255/45/18s are not 255/40/19s. 255/40/19 are spec'ed for 8.5-10" (link) wheels and ours are 8" wide. Running tires out of spec will void the manufacture warranty automatically due to sidewall and tread separation issues. Meanwhile a 255/45/18 is spec'ed for 8-9.5" (link) wheels. As you run taller tires you can run wider section widths on a smaller wheel. That's why you can run 275s on some 7" wide wheels in SUV/truck fitments.

 

[Fast55]

I'm aware of the differences, but thought someone here said the R-Spec wheel was a 19X8.5"? The 8" wheel would be pushing it. You might make it work, but that is outside the range. If you wanted to get fancy, you could always have Stockton widen them. The R-Spec wheel with a small lip would look good.

 

[wd40]

Not sure what you're saying, but your attachment shows what we already know, that the rolling diameter is very close to stock. But that has nothing to do with how well it fits on the wheel.



255/45/18s are not 255/40/19s. 255/40/19 are spec'ed for 8.5-10" (link) wheels and ours are 8" wide. Running tires out of spec will void the manufacture warranty automatically due to sidewall and tread separation issues. Meanwhile a 255/45/18 is spec'ed for 8-9.5" (link) wheels. As you run taller tires you can run wider section widths on a smaller wheel. That's why you can run 275s on some 7" wide wheels in SUV/truck fitments.

I listed the attachment for reference purposes. Many tire shops (Discount Tire, Tire Rack) show the 255/40/19 as a plus zero option, so they must feel the tire will operate sufficiently on that rim. Get a life.

 

[brfatal]

I listed the attachment for reference purposes. Many tire shops (Discount Tire, Tire Rack) show the 255/40/19 as a plus zero option, so they must feel the tire will operate sufficiently on that rim. Get a life.

Since when is saying something is a plus zero size saying that it will work or that it's recommended? Especially when those same sites will tell you that it's NOT recommended fit? Plus zero, plus one, plus two are rolling circumference sizing terms, and has nothing to do with how well it will fit on a given wheel.

I have a life, I just happen to know a lot about tires.

 

[shagnat]

You don't understand the purpose, really? Generally, wider = more traction. Keeping the diameter the same is important for other reasons beyond speedometer accuracy and I can't see anyone wanting to make the speedo less accurate. The 255/45/18 has been used to replace the stock 235/50/18's on cars with 18" wheels (same width as 255/40/19). The 255 tire is the maximum recommended width on stock rims for most tire manufacturers and should not void any warranty.

Never said anything about warranty. And does the car need more traction?? Mine does perfectly fine with the stock size. The type of driving the OP does may be a situation to where he'd want more traction, but, didn't state any such situation. A wider tire (or bigger in any dimension) would make the tire heavier thus slightly reducing performance and gas mileage. Maybe not noticeable, but, it would be there just the same. Why go bigger for the sake of going bigger?

 

[Fast55]

Wider tires will increase grip in all directions. 1-2 more pounds per tire could easily be made up by reducing tire spin or increased cornering, thereby making the car faster, not slower. Wider tires tend to look better (up to a point), and a R-Spec can roast the tires, so the thought that maybe, just maybe, someone is looking for increased traction could be the reason for the topic.

If I have to explain it to you,,,,,,,,,,,,,,,I can't explain it to you.

 

[GenesisCaptain]

Why go bigger for the sake of going bigger?

'Cause it also looks good!

My last car's stock 18" wheel & tire was 235 in back. They had a staggered option that put 255s in back. But, I bought wider staggered wheels and had 275s in back. They 275s looked freakishly awesome. I ultimately dropped back to 255 because of cost.

 

[JasTheAce]

I listed the attachment for reference purposes. Many tire shops (Discount Tire, Tire Rack) show the 255/40/19 as a plus zero option, so they must feel the tire will operate sufficiently on that rim. Get a life.

Plus zero just means that its a 19 inch tire that will fit the car. It says nothing about fitting the RIM, which is the limitation. I said it generally wouldn't fit, because most won't fit our rims.

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[JasTheAce]

The other thread on this, for reference....

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=10685

 

[shagnat]

Wider tires will increase grip in all directions. 1-2 more pounds per tire could easily be made up by reducing tire spin or increased cornering, thereby making the car faster, not slower. Wider tires tend to look better (up to a point), and a R-Spec can roast the tires, so the thought that maybe, just maybe, someone is looking for increased traction could be the reason for the topic.

If I have to explain it to you,,,,,,,,,,,,,,,I can't explain it to you.

You're fishing to try to justify a stupid response. Faster? Less tire spin? If somebody is driving so aggressively as to be spinning tires on acceleration and or cornering, then let the chips fall where they may.

But, WHY would you want to talk down to someone who is trying to contribute to a civil conversation? (btw, that's a question for you to answer, not for me to get another sarcastic response from you)

 

[Fast55]

I'd have just called you an idiot if I was talking down to you. The response was not sarcastic. I'm pretty sure everyone else here understands that larger tires not only increase traction, but as already pointed out by others, bigger rubber just looks better. If you don't agree that's one thing, but if you think everyone else has the same opinion, then yours is the stupid response.

 

[brfatal]

You're fishing to try to justify a stupid response. Faster? Less tire spin? If somebody is driving so aggressively as to be spinning tires on acceleration and or cornering, then let the chips fall where they may.

But, WHY would you want to talk down to someone who is trying to contribute to a civil conversation? (btw, that's a question for you to answer, not for me to get another sarcastic response from you)

Please be aware that this is an enthusiast site. More people here are concerned with performance than your standard consumer.

 

[VanillaGorilla]

I need to replace all four tires on my 2012 R-Spec sedan. The tires that came on it are 235/45/19. Tirerack.com lists an additional OE tire size, 245/45/19. There are more choices for tires in the 45 size. Is it OK for me to get the 245/45/19's? Any drawbacks?

Im not a tire expert by any means but i just put on 4 new 245/45/19 tires and have had no noticeable issues. I purchased them from Costco and they installed them and then had an alignment done. Neither shop said anything regarding tire size. I was originally going to order from Tirerack.com but Costco had $70 off a set of 4 and offer free tire balance and rotation for upto 60 months. Not a huge fan of most chain tire places but Costco did torque my lug nuts to the factory specs. They apparently have a chart and do this for every car.

Just to add that i went with the Bridgestone Turanza Serenity Plus tires. It was between those and the Continential ExtremeContact DWS. I read on several different forums about the Continential pulling to the right for some reason. The Bridgestone is a newer tire and havent heard anything negative about it. So far i have no complaints but only have a few hundred miles on them.

Just my experience. Hope you find it helpful.

 

[Crusty Old Shellback]

The 245/45 19 summer tires on the R Spec ARE NOT a dealer installed option. They are a manufacture installed option, i.e. the come over from Korea with them already on. I see them roll off the ship with them. Also if you read the window sticker on the car you'll see it's a factory installed option. So if you want to run a 245/45 19 tire on your R Spec, go ahead. You should have no issues.

But to run a 255, you'll need a wider rim.

 

[kdjlaw]

Many thanks to everyone for their help. I enjoy the generous cooperation of subscribers, both when I make an inquiry and when I read those made by others.

Thanks to that advice, I went with the 245/45-19's. I'm in the deep south, so I didn't need to get an all-weather tire. I chose the Bridgestone Potenza S-04 Pole Position's. I'm therefore changing from the Grand Touring All Weather tires that came on the car to Summer Max Performance tires.

Two things:

First, I got the best price from Tire Rack. I called a local Firestone/Bridgestone dealer (from Tire Rack's list) and he quoted a price about $40 per tire higher. But when I told him I was going to buy them from Tire Rack he matched the price! (I couldn't have saved on the sales tax because Tire Rack has a distribution warehouse in my state. I was going to have to pay the sales tax no matter what.) Then when I got to the dealer I noticed a sign that said there is a rebate on these tires, among others. I'll get $70 back!

Second, I am amazed at how much better the car drives. As naïve as it sounds, I didn't realize switching from one good tire to another could make this much difference. When I turned a sharp corner the Continental ContiProContact's that came on the car would squeal a little and didn't feel all that secure. These summer tires make any corner without a complaint and it feels like I'm glued to the road. I feel like I'm able to enjoy the performance of my car now! I know I won't get great mileage out of these tires, but that's a price I'm willing to pay. Besides, the Bridgestone's cost less than the Continental's they replaced.

Thanks again for the help.

 

[SNSN]

Many thanks to everyone for their help. I enjoy the generous cooperation of subscribers, both when I make an inquiry and when I read those made by others.

Thanks to that advice, I went with the 245/45-19's. I'm in the deep south, so I didn't need to get an all-weather tire. I chose the Bridgestone Potenza S-04 Pole Position's. I'm therefore changing from the Grand Touring All Weather tires that came on the car to Summer Max Performance tires.

Two things:

First, I got the best price from Tire Rack. I called a local Firestone/Bridgestone dealer (from Tire Rack's list) and he quoted a price about $40 per tire higher. But when I told him I was going to buy them from Tire Rack he matched the price! (I couldn't have saved on the sales tax because Tire Rack has a distribution warehouse in my state. I was going to have to pay the sales tax no matter what.) Then when I got to the dealer I noticed a sign that said there is a rebate on these tires, among others. I'll get $70 back!

Second, I am amazed at how much better the car drives. As naïve as it sounds, I didn't realize switching from one good tire to another could make this much difference. When I turned a sharp corner the Continental ContiProContact's that came on the car would squeal a little and didn't feel all that secure. These summer tires make any corner without a complaint and it feels like I'm glued to the road. I feel like I'm able to enjoy the performance of my car now! I know I won't get great mileage out of these tires, but that's a price I'm willing to pay. Besides, the Bridgestone's cost less than the Continental's they replaced.

Thanks again for the help.

I'm suffering through my 2nd set of ContiProContac. First set was replaced at 10,000 by Hyundai because of pulling. Now at 29,000 miles the dealer is telling me they need to be replaced again. I'm also having another pulling issue .
The tires have plenty of tread left, so I'm not sure why, with only 19,000 miles on them , the dealer is telling me to replace them.
I really don't want to go back to the ProContact's.
I've read here thet most R Spec owners are much happier after they switched to a Bridgestone, either the Pole Position or the Serenty Plus...

What kind of milage do you expect from the pole position?
Are they not a good option for the Northeast, because of the winter?