shmookles

Hey guys,

So i got these new wheels:

Rims: Racing Hart C5 18" with 42 offset
Tires: Pirelli S7000 Super Sport 215/40/18
(215's suck, but I got them together with my rims second hand for dirtin great shape for $900)

In any case, I finally slapped those puppies on last night and drove my car with my new set of wheels to work this morning. I noticed quite a difference from my 16" CL stock rims. First of all, the wheels make a weird noise, they don't rub at all, so I'm not sure if it's just the wind or what? Next, I noticed my steering wheel started to rattle a bit more and isn't like it used to be when I had the stock rims on there. Any ideas? Anyone with similar probs?

CLASSYCLS

Does tires are directional tires, my friend in his 3.0 CL had the same thing, it made a weird noise and the wheel started to vibrate, he had the P7000 SS 215/45/17, when he finally put the tires in the right direction, it was ok then, but look at the arrows on the tires are they going in the correct tire rotation?? If that is not the case, get the wheels balanced again, and make sure that the rims are not bent!!

shmookles

The arrow is going the right direction and I knwo for sure the rims are not bent. I guess I will have to go and get them rebalanced. We'll see what happens...

Thanks.

NSXNEXT

iTrader: (2)

Did they come with hub centric rings? It's a plastic ring that you slide over the hub prior to mounting the rim. This makes sure the wheel is centered perfectly on the wheel before you tighten up the lugs. I think all Racing Harts and RH Evolutions require these.

shmookles

no i didn't get one of those, where can I buy one of those? links?

-Ed

sgmotoring

Maybe you are hearing tires noise and your wheels are not balanced. Most used tires are cupped or have uneven wear which cause a lot of road noise or tires noise.

Sly Raskal

iTrader: (1)

the p7000 series are known to be louder then other tires.

Roleez

I already know the problem; it's not the rims, it's the tires... I've had 2 years experience with Pirelli SuperSport P7000's. Tread design is awesome and straight line tracking is exceptional, however, there is a downside... the tread design unfortunately creates awful tread noise. Just ask anyone who's had these same tires... they HOWL/WHINE at speeds >35 mph. But as for the shaking, it's just a simple re-balancing, provided you have hubcentric rings on. If you're anywhere near an Americas Tire Co., ask for the Road Force balancing. It applies a force (esentially a steel roller) onto the tires surface as it is being spun on the balancer to correct for irregularites in the tire's construction that normal balancing cannot account for. Good luck.

shmookles

Roleez, you are correct in assuming that in speeds greater than 35, it damn nearly howles like a truck with swamp tires. I'm not familiar with hub centric? What is that and do I NEED it for my setup? Somone in an earlier post saidthat RH rims require hubcentric spacers? Whatever that means...

Thanks for your help...

mc222

I have the RH C5s as well, They make no noise

Like Roleez said, its prob. your tires -

Just in case, check and make sure hex screws are tight on the centercaps.

shmookles

but what about these centric hubs? Do you have a pair of those?

Roleez

Rims mount to a car's hub in two ways: 1) LUG-centric: the lug nuts support the weight of the car (example: aftermarket rims with no hubcentric rings installed), and 2) HUB-centric: the center hole of the rim mounts/mates perfectly with the mounting hub to support the car's weight (example: stock rims); it is wise to use 4 hubcentric rings, but some people only use them on the fronts.

To account for the various sizes in mounting hub diameters, manufacturers purposefully manufacture the center hole of their rims much LARGER than what you'd find on a stock rim. To account for the "gap" created when an aftermarket rim is mounted to the hub of a car which is smaller in diameter than the rim's center hole, hubcentric rings (made of plastic or metal) are inserted to fill in this gap. The main purpose of the rings is to allow the rim to be perfectly centered onto the mounting hub. This position is then secured once the lug nuts are installed and torqued.

Without the hubcentric rings, a car will be LUGcentric and in this configuration, the rim may not be perfectly centered on the hub regardless of how careful one is in tightening the lug nuts in proper sequence. Thus, a rim could be (for example) 1/2 of a millimeter off-center. Sounds miniscule, but such a situation can cause vibration problems. This can fool someone to think that their rims are out of balance when in fact, their rims ARE balanced, but are MOUNTED slightly off-center. If these rims were mounted hubcentrically, the vibration disappears.

shmookles

where could one get a set of hub centric spacers?

Roleez

Check the place where you bought your rims at, or if you have an Americas Tire Co. or Discount Tire Co. nearby, hit them up. They can contact the rim manufacturer to place an order for hubcentric rings made specifically for your car. Depending on the manufacturer, you'll get either metal rings (ex: Momo) or plastic (ex: Axis) ones. You might even get lucky that your rim store already has an assortment of rings in stock that they can test fit on your car to find the perfect match.

shmookles

how much do they normally cost for racinghart rims?

Roleez

I have a set of 19" Axis7Mods. Americas Tire Co. (where I bought the rims) charged me nothin' for 'em (they were plastic) since I already dished out bucks for rims and tires. But they did tell me that on average, a set would run around $20-ish, which is what I paid for to get metal rings from Momo to fit my other car.

shmookles

ahhh cool, thanks for the info, I'll hit them up this week...

-Ed