5.0 rspec staggered wheel fiments

[Odie]

Hello Everyone, I'm new to the forum.

I picked up my new 5.0 R spec a couple of weeks ago and I'm truley in love. The only complaint I have is the wheels. A car with such an amazing natural rake to it deserves a Staggered wheel set up with 275's on the back. However every place I call says there product won't fit on my car.

My question is, Has anyone put a stagged set up on a 5.0 r spec and which ones. I've personalized several vehicles and I've never had this much trouble.

My 1st choices are MRR hr6, EXE KonKave. I've always understood if you don't go out of the perimeters of the OEM wheels stats, your good to go. I've found that the OEM wheels are 19X8 ET38 5X144.3. and both the for mentioned wheels come in in 19X8 ET 35-45 and 19X9.5 ET 35-45.... AM I missing something else or are these guys just not familar enough with the model of car and don't want to guarantee fitment.

Thank you for any input

Gary

P.S Great Forum guys, I've learned so much about the car from here.

 

[Skywagon]

Try www.rimsntires.com. Go to the lower left hand column to "Comparer". Pay the $12. for the pro version.

 

[Odie]

thanks I check it out last week. does the paid version allow you to choose offset and does it have our car? the site it self doesn't have the r spec on the fitment guide. they also seem to say assume and acceptable a lot.

 

[Skywagon]

The paid version does not have any particular car, it does, however, get much more specific. I've played around with over sized wheels and tires for years. The only two problems I ever had were touching the lip of the rear wheel well of during full locked turns the rear of the tire touching the back of the front wheel well. Ultimately a tape measure and that sight are a tremendous tool. Below is a link to some wheels and tires I'm trying to sell. Not that you're interested but it will show you what I did and had no problems.

http://genesisowners.com/hyundai-genesis-forum/showthread.php?t=9322

 

[Odie]

Yes I looked at all your posts, and found them very helpful. I to have done many cars, different fits and makes so I just thought there was something new to it,

I've honestly tried about 35 wheels and everyone of them claim they won't fit.
which is weird because the only manufacturer that says they're rims work is TSW which has a very generic sizes and offsets. So if lets say your Nurburgring are 19X9 Offset 35 works. then Why wouldn't any other rim with the same spec work? (obviously with exception of a deep lip custom wheel)


I'm pretty sure the mentality is. if they don't know they will fit for sure. they say they don't. But I think i'll just order them anyway. But I will do the pro thing and get some hard evidence to take to my wheel guy. Thanks for all your help.

 

[Skywagon]

The only thing I could think of may possibly be the structure of the wheel and the brakes.
Try the below folks, ask for Eric. I bought two sets from him and both have worked perfectly. I don't know if being in Canada presents a customs problem but my last set, tires mounted, TPMs, balanced and all required hardware arrived in 6 days. Good luck.

http://www.wheelstudio.com/

 

[fazerG8R]

I've posted several times asking about the effects of staggered wheel/tire combinations on the Sedan. I know that going from the stock staggered wheels to equal sizes front and rear screws the traction control on the Genesis coupe, but nobody on this forum seems to have any idea what the effect would be. Rubbing and the effect on the speedometer are pretty much no brainers, the traction control effect is the real question.

 

[msitter]

My guess is that the traction control and the abs are not concerned with the overall diameter of the tires as much as the fact that they should be similar front and back. Stagger all you like as long as this is kept in mind. A 245/40 front and a 275/35 rear should be pretty close. The rim fitment problem has more to do with clearing the front calipers than offset. Offset is what keeps the tires from rubbing on the fender lips or inner wheel housings but has nothing to do with clearance for the brakes. This, for some reason, has been a problem for the Genesis sedan. Since the Mustang and the Genesis share the same bolt pattern, similar offsets and both have been built with large calipers on certain models, there may be some answers here.

 

[krazyfiend]

OP: You're correct about mnftr's playing it safe and if they don't know or haven't verified the fitment themselves, they will side on caution and flat out say 'no, it won't work'.

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=8821
^^^
Look into jastylr's link and he definitely know about running a staggered setup, mind you he's running 20's but has a nice offset and stance dialed in.

http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=9267
^^^
Ri0uxx from this thread might be of help as well...also running 20's.

The rim fitment problem has more to do with clearing the front calipers than offset. Offset is what keeps the tires from rubbing on the fender lips or inner wheel housings but has nothing to do with clearance for the brakes. This, for some reason, has been a problem for the Genesis sedan. .

Offset, width of the rim, and design of the rim face actually have everything to do w/ the clearance of brake calipers... just ask guys over on MBWorld, Acurazine, or even the Genesis Coupe forums about clearing stock brembos and upsized calipers (off larger sedan models from the manufacturer, think going from 2-pot to 4-pot calipers and so on). Offset not only is how much outward 'push' the rims mounting point is away from the hub, but how far away it is away from the rotor/caliper/brake assembly...thus it directly impacts 'clearance'.

When you contact Wilwood, Stoptech, or other BBK (Big Brake Kit) mnftr's or their vendors...right off the bat they will inquire if you run aftermarket rims of not and if you have verified if your offset/design will clear their caliper because of it's increased size. Aside from the look and pushing wheels/tires out more to make a car not look not chicken legged from the rear, spacers are also used to change the offset...a 5mm spacer on a +35 offset makes it +30. Quite frequently these spacers are used on stock wheels or aftermarket as a shim and to allow the clearance of larger brake systems.

I hope this didn't come off as condescending or anything-- purely informational and trying to make sure people understand offset. I once had no clue about this topic and my past 94' 400E was my learning point when transitioning 500e500 w124's massive calipers amongst other parts, over to it and running staggered 19" Wald wheels.

 

[msitter]

I beg to differ but offset has absolutely no bearing on whether or not a rim fits over a brake caliper. As long as the rim is of sufficient diameter to clear the outside of the caliper offset does not come into play. Offset is merely the position of the rim in relationship to the centerline of the mounting surface. The clearance issues with the Genesis was that the inside face of the wheel was hitting the face of the caliper and no offset came into play it was solely the contour of the inside of the rim. A spacer will change the offset relative to mounting position on the car but it does not change the actual offset of the wheel it only pushes the wheel farther from the caliper and that is different.

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[forzza1]

If memory serves me right, there is a forum member here that has the following setup:
Front: 245/35-20 (20x8.5)
Rear: 275/30-20 (20x10)

 

[STREETS]

Get the EQUUS wheels- they are staggered

 

[SegaGen]

If memory serves me right, there is a forum member here that has the following setup:
Front: 245/35-20 (20x8.5)
Rear: 275/30-20 (20x10)

I'll be running this on my Genesis when my coilovers come in... If they do ever come in.. LOL

20x9 +9 - 225/30/20
20x10 +17 - 245/30/20

not everyones cup of tea tho..

 

[jastylr]

I've been running a staggered fitment for a couple of years now, no problems. I have 20's with 245/35-20 (20x8.5) front and 275/30-20 (20x10) rear like @forzza1 has mentioned. I'm running Vertini Hennessey wheels. You can see a better look at the fitment here: http://www.genesisowners.com/hyundai-genesis-forum/showthread.php?t=6197. I've been asked before and unfortunately I forget the exact offset that I'm running but I believe the rears at least are +35.

I have also been running on coilovers for as long. Waiting for new ones hopefully soon like SegaGen.

I don't know anything specific about the brake setup on the R-Spec but I'm willing to bet that fitment for this car isn't any different. I do know that online sites typically don't list staggered fitments as being compatible with the Genesis. For the most part those wheel configurators show you wheels that match OEM specs so if you try select something outside those specs, they say they won't fit even though they just might.

My suggestion is to simply find a local wheel shop that can find the right fitment for the car based on the wheels you like. It's much better than trying to do it through an online site. You may end up paying a little more than you would online but you know what you're getting.

 

[krazyfiend]

I beg to differ but offset has absolutely no bearing on whether or not a rim fits over a brake caliper. As long as the rim is of sufficient diameter to clear the outside of the caliper offset does not come into play. Offset is merely the position of the rim in relationship to the centerline of the mounting surface. The clearance issues with the Genesis was that the inside face of the wheel was hitting the face of the caliper and no offset came into play it was solely the contour of the inside of the rim. A spacer will change the offset relative to mounting position on the car but it does not change the actual offset of the wheel it only pushes the wheel farther from the caliper and that is different.

You are correct, unless you have the inside mounting face of the rim milled down professionally, you cannot change the offset of a rim, but you can change the offset of the mount and overall setup w/ spacers once the lugs are attached and wheel/tire is on the car.

In this discussion we have have forgot to mention one particular factor that goes along with rim offset when mentioning brake calipers and wheels. the axle offset measurement that comes from the factory.

'it only pushes the wheel farther from the caliper and that is different.' -- what do you call that measurement then? the negative impact on offset relative to the actual wheel offset?

http://www.stoptech.com/technical-support/bbk-wheel-fitment-templates

'Brakes exist in the space between the wheels and the hub on a vehicle. On the inboard side, there are suspension pieces. The diameter of the brakes can't exceed the inner diameter of the wheel used, and the inside spokes of the wheels limit how wide the brake calipers can be. In this confined space StopTech produces brakes are larger than stock brakes to provide more performance.

Space for the calipers varies by wheel design. Two wheels with the same offset, same diameter, and same width will yield two different fitments. One that does fit over the brakes, and one that does not. For that reason it is crucial to use the wheel fitment templates to check whether a wheel will fit over the brakes for your specific application.

If there is interference, different wheels or a wheel spacer will be necessary. Use of a wheel spacer is at the discretion of the vehicle owner. Typically a properly made spacer of 2-3mm will not adversely effect the vehicle. Issues that must be addressed before utilizing a wheel spacer include, but are not limited to, fender clearance, proper wheel bolt or stud length, effect on vehicle handling, and centering of the wheel. Wheel fitment and the use of wheel spacers with our big brake upgrades is the responsibility of the customer.

However, I will also go on to rant against wheel spacers and the ability to pay to play, attaining the offsets one desires while clearing brake caliper assemblies.

The proper offsets have little to do with caliper clearance in general. Utilizing spacers to change the clearance of the rim face from the caliper has become a 'workaround' due to the proliferation of cast wheels and their static options in the aftermarket world (keeping costs down). Caliper clearance is more a function of "Disk Type" or spoke design along with back pad thickness. High end wheel manufacturers offer multiple disk types at a given offset of the same wheel design to fit multiple applications.

Since most people in the general public opt for low cost, cast wheels (not dismissing cast, they have come a long way, but nonetheless, heavier than forged and static options for the most part) it is unlikely that a brand based around cast wheels will ever offer different disk types (or spoke designs). These wheels have a very very flat face and IMO it is unlikely they will fit a large or BBK caliper w/o ordering a more aggressive offset (or a spoke design that would be compliant w/ the caliper fitment).

Anyway, below is something I borrowed from a Work Wheels catalog that shows different disk types that Work Wheels offers. Most rim manufacturers do not offer this flexibility in ordering and design options, on demand.