how much actually doe 17 inch rims slow you down on a GSR for example??? anyone really know???? with a 205/40

 

They don't really slow you down, at least not that is noticeable while driving. I think the main thing you lose is top end power.

BTW: I have 18's on my 98 GSR and don't notice a difference.

 

how much do they weigh

 

well I never drove my GSR with stock rims but I can say that they are hard to launch with at the drag strip. Physics says that they should slow you down even if they weigh the same amount as the stock rims so I say without a doubt they will slow you down.

 

its not cuz they weigh your car down that its slowing you down, its the fact that its harder for the engine to turn the heavier weight...take paper towel roll ( the card board peice) and twist your wrist while holding it in your hand....take a metal pipe thats the same size, and do the same thing, its gonna be harder...so figure it out...its basically more stress on the engine and more force thats required to turn those heavy wheels.

 

It depends what type of Rim. They all range in different weights.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by btl fed &raquo;</TD></TR><TR><TD CLASS="quote">They don't really slow you down, at least not that is noticeable while driving. I think the main thing you lose is top end power.

BTW: I have 18's on my 98 GSR and don't notice a difference.</TD></TR></TABLE>

I find that hard to believe. It's all about rotating mass and unsprung weight. Even if you have a lightweight 17 or 18" wheel you will notice a definite difference in acceleration compared to your factory size wheels.

 

Thats not true. 17s Do slow you down considerably; more general weight, more rotational mass, the harder the engine works, and the harder it is on your tranny. Not only that, 17s throw off your odometer reading. 17s make enough of a difference so that peopl that are really interested in all out speed never go higher then 15s.

 

So even something like TE-37s in 17" would slow you down alot?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IntegraBoy04 &raquo;</TD></TR><TR><TD CLASS="quote">So even something like TE-37s in 17" would slow you down alot?</TD></TR></TABLE>

Yes! Lightweight is good but it will still slow you down.

Think of it this way:

The majority of the weight is further towards the outside of the wheel when you have 17" rims then when you have 15" rims.

Take a string about 15" long and tie a weight to the end. From a stop try to start it spining. Now take the same weight and make the string 17" long and notice the difference. That is what everyone is talking about.

Sorry for the crappy example

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IntegraBoy04 &raquo;</TD></TR><TR><TD CLASS="quote">So even something like TE-37s in 17" would slow you down alot?</TD></TR></TABLE>

Yup!

Any 17" rim will slow you down. THe circuference is larger than 15" rims therfore taking longer for your 17" to make one full revolution when compared to 15".

by how much exactly....I cannont answer that.

 

this is how i think about it.... think about riding your moutain bike, your front sprockets(usually 3). Is it harder to turn the larger sprocket compared to switching gears down to the smaller sprocket?? so i think the tranny has a harder time turning the 17's over 15's.....my .02

 

I went from stock to 17's and then to 15's. The 17's were hard to launch, and although I didn't notice it too much in the top end, the first two gears is where I felt it the most. IMO, I'd just stick with 15's or maybe 16's, unless you're FI.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IntegraBoy04 &raquo;</TD></TR><TR><TD CLASS="quote">So even something like TE-37s in 17" would slow you down alot?</TD></TR></TABLE>

if the overall diameter is bigger (which will most likly be the case with such a large wheel) then it will adversly effect gearing. not to mention the mass of the rim is being moved further out from the center. Its really not optimal.

EDIT : Not to mention our hondas don't have alot of torque to begin with. Why waste it trying to spin a big wheel?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by arizsun21 &raquo;</TD></TR><TR><TD CLASS="quote">

Yes! Lightweight is good but it will still slow you down.

Think of it this way:

The majority of the weight is further towards the outside of the wheel when you have 17" rims then when you have 15" rims.

Take a string about 15" long and tie a weight to the end. From a stop try to start it spining. Now take the same weight and make the string 17" long and notice the difference. That is what everyone is talking about.

Sorry for the crappy example


</TD></TR></TABLE>

I thought that was a decent example, actually. And yes, they will slow you down.

 

heres my 2 cents, i went from factory to 17's and if I put on next two the other on level ground they were only 1/2 in taller, i lke my rims and its all pesonal preferance, rember speed doesnt get you the lady's, looks do

 

it is about rotational mass, my 30lb 18inch rims compared to my 16.5lb 15inch gsr rims makes a big difference on acceleration. It is about 600lb of rotational mass that i lose going down to my stock rims. also gas mileage wont be increased truely since the rim is in motion already.

 

but lets say this. what about 17 inch rim that weigh the same as 15 inch rims. but the 17's have 35 tires and the 15's have 50 or 55's isnt that the same diameter?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by axion7606 &raquo;</TD></TR><TR><TD CLASS="quote">but lets say this. what about 17 inch rim that weigh the same as 15 inch rims. but the 17's have 35 tires and the 15's have 50 or 55's isnt that the same diameter?</TD></TR></TABLE>

it works out the same. i had 17" enkeis on my teg. i was a tad bit slower on the launch. but for what i lost in acceleration, i gained in traction. sure the 15" wheels may weight less, but there also tire flex and contact area to consider also.

 

My friend ran ,


17.8 w/ 17s

17.7 w/ 15s stockies, so I dunno, I would think it would help you more, so even if his launch sucked or whatever, either way, in the 1/4 the diffrence isn' t that much...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by QUICKTEG &raquo;</TD></TR><TR><TD CLASS="quote">My friend ran ,


17.8 w/ 17s

17.7 w/ 15s stockies, so I dunno, I would think it would help you more, so even if his launch sucked or whatever, either way, in the 1/4 the diffrence isn' t that much...</TD></TR></TABLE>

I currently traded my LS rims with my friends 17's on his GSR for a week so he can decide what color rims he wants, and I must say the car is dog slow with big heavy 17's on, and his GSR pulls much harder with the 15's (not to mention steering response is MUCH better with the 15's)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dc2_and_ef &raquo;</TD></TR><TR><TD CLASS="quote">rember speed doesnt get you the lady's, looks do</TD></TR></TABLE>

HA HA HA!!! That's pretty funny... seriously, what kind of ladIES do you get driving an Integra???

 

Not enough to be really noticeable. What you lose off the line you will gain in traction. All these theories about rotational mass are wrong. If you got some lightweight 17's lighter than your stock wheels and upgrade the tires, you will be faster. You have the same rotational mass w/less weight per each wheel so no you will not lose speed. Just remember to do it the right way and when you up the rim you drop the tire.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rewsnaeht &raquo;</TD></TR><TR><TD CLASS="quote">

I currently traded my LS rims with my friends 17's on his GSR for a week so he can decide what color rims he wants, and I must say the car is dog slow with big heavy 17's on, and his GSR pulls much harder with the 15's (not to mention steering response is MUCH better with the 15's)</TD></TR></TABLE>

What are you smokin'? You will get much better traction w/17's.

 

yea because torqueless hondas have trouble turning those heavy 17's. his car definately pulled harder. not to mention the better gear ratios he has with smaller rims.

17's=