SS Rim and Performance ?

[CASANOVA]

i hav SS wheels installed on my TB but what need to know is will these rims effect on perforamnce, one guy here told me it will decrease ur HPs (5 HP) because of the rims weight.
but some guys told me not only the weight but even the wheel rotation will effect on performance !!

so i need ur opinions

[MisterP]

Yes you will take a hit in performance; how much I cannot say exactly, I don't know the exact weights being discussed but I would not be surprised at all if it's 1-3 tenths in the quarter. As a general rule adding unsprung weight is not desired, not only is it heavier but also is more wear/tear on your suspension & will have an adverse affect on handling when going over rough pavement. And a hair worse fuel mileage. Blingin' costs...

Mr. P.

[Ames]

It certainly does reduce performance. It's going to make braking worse and make the brakes wear faster also. But honestly it looks better and who cares if you lose a little performance; you aren't going to be racing people anyway.

[CASANOVA]

what about wheel rotation and speedometer issue ???

[2002SLT]

what about wheel rotation and speedometer issue ???

No issue. They are the same as the stock diameter.

[CASANOVA]

No issue. They are the same as the stock diameter.

what about the wheels tuning ? there's a thread here about this issue

[2002SLT]

what about the wheels tuning ? there's a thread here about this issue

Tuning? :confused:

Edit: You mean tuning for the new size? If so, that wouldn't be necessary if you go to the SS 20" wheels. They are the same diameter, as I said earlier. You can put them on and go.

[hatchet669]

yea as long as they are the same size rims and tires there is nothing to be reprogramed

[bumperquip]

one guy here told me it will decrease ur HPs (5 HP) because of the rims weight.

Someone told you that installing heavier wheels will reduce hp?

That's like saying by wearing running shoes instead of steel toe boots, you can squat more weight.

[jaylind]

It certainly does reduce performance. It's going to make braking worse and make the brakes wear faster also. But honestly it looks better and who cares if you lose a little performance; you aren't going to be racing people anyway.

You haven't been to Kuwait have you? I spent 6 months there and seen many-a-race on the highway and roads between moving from Camp to Camp. Hell we even did is in Suburans..

http://one.revver.com/collections/show/151253

Here is some of the Crazy stuff we did in Kuwait, Camp Doha and the areas to the north..

JAy

[CASANOVA]

Tuning? :confused:

Edit: You mean tuning for the new size? If so, that wouldn't be necessary if you go to the SS 20" wheels. They are the same diameter, as I said earlier. You can put them on and go.

yeah sure tuning for the new size, i have 275/40 its little bit bigger that the stock diameter

[mikeb33]

Someone told you that installing heavier wheels will reduce hp?

That's like saying by wearing running shoes instead of steel toe boots, you can squat more weight.

Would you rather run a race with 5 lbs of lead in your pockets or your shoes?

[blandmiller]

It is not so much the total weight increase (maybe 12# each) but where the inertial mass is located. If the wheels have more mass further away from the center, they will be much harder to accellerate (and de-cellerate).

[cmb570]

I just sold my SS stock wheels & tires and had to weight them. I was surprised out how heavy they weight, roughly 72lbs each. Thats alot of weight. I bet you would see a noticable difference if you could lighten that up

[bumperquip]

Would you rather run a race with 5 lbs of lead in your pockets or your shoes?

But that's not horsepower your talking about, it's performance.

I cannot argue that weightier rims can reduce performance (i.e acceleration), but it has no effect on horsepower.

A vehicle producing 291 hp will produce 291 hp regardless of the weight of the wheels installed. It may accelerator slower than the same vehicle fitted with wheels weighing 100 lbs less, but it will still produce 291 hp.

[mikeb33]

But that's not horsepower your talking about, it's performance.

I cannot argue that weightier rims can reduce performance (i.e acceleration), but it has no effect on horsepower.

A vehicle producing 291 hp will produce 291 hp regardless of the weight of the wheels installed. It may accelerator slower than the same vehicle fitted with wheels weighing 100 lbs less, but it will still produce 291 hp.

I don't think anybody claimed bigger wheels, reduce horsepower. I certainly didn't. The problem with bigger wheels is: not only are you trying to move the extra weight down the street(or track), but you are also spinning it too.

[bumperquip]

I don't think anybody claimed bigger wheels, reduce horsepower. I certainly didn't.

Sorry, somehow I read your initial reply as agreeing with CASANOVA's post wherein he indicated that someone told him that larger rims reduce Hp.

... one guy here told me it will decrease ur HPs (5 HP) because of the rims weight.
but some guys told me not only the weight but even the wheel rotation will effect on performance !!

so i need ur opinions

[blandmiller]

They do reduce wheel HP by requiring more power to spin the heavier wheels.

[ShadowClutch]

Would you rather run a race with 5 lbs of lead in your pockets or your shoes?

Neither, but if I had to, I'd do it in the shoes, 10lbs extra right below the hips would put balance and cause stride issues. Whereas your hip flexors would eventually adapt to the 5lbs on your feet. :raspberry

[BUC NASTY]

put it this way: the heavier the vehicle the slower it will get. just like us people :yes:

[MajesticLT03]

it doesnt effect Horsepower

it effects Torque


since Torque is basically the force of enertia to get a stationary object moving.. adding more weight will increase rotating mass.. thus requiring MORE torque to move it.