Does your car take a Performace hit...

Marty McFlew · 05-01-2017, 11:28 AM

Does your car take a noticeable Performance hit with a passenger?

Chadicus · 05-01-2017, 11:47 AM

Never noticed one. My girlfriend only weighs 120 and I never really push it too much with her in the car. I would never take her with me down a dragstrip or on a track day.

Fraxum · 05-01-2017, 11:50 AM

Quote:

Originally Posted by Chadicus

Never noticed one. My girlfriend only weighs 120 and I never really push it too much with her in the car. I would never take her with me down a dragstrip or on a track day.

Your girlfriend would not be allowed to ride with you in either case.

OP, more weight = lower performance. It's physics.

gw6211 · 05-01-2017, 11:57 AM

Quote:

Originally Posted by Chadicus

Never noticed one. My girlfriend only weighs 120 and I never really push it too much with her in the car. I would never take her with me down a dragstrip or on a track day.

pictures or she doesnt.

mbar · 05-01-2017, 11:58 AM

My lap times on a 2 miles track would be 1-2 seconds faster. However, the balance of the car is not as good on corners without a passenger.

cmeJATT · 05-01-2017, 11:59 AM

depends on the weight of passengers? lol ..

i noticed on my NX200T, it takes a huge hit in performance and mpg .. in the camaro never really noticed plus i don't drive "spirited" if i have people in the car.

Quote:

Originally Posted by Marty McFlew

Does your car take a noticeable Performance hit with a passenger?

Eric SS · 05-01-2017, 12:33 PM

I had a passenger in my car for a track day session a few weeks ago that weighed probably around 300lbs and I could tell a noticeable difference in the corners and braking. I couldn't really notice is on the straights.

C5Txfan · 05-01-2017, 01:51 PM

The old rule of thumb about weight used to be (might still) be a 10 HP loss for every extra 100 lbs.

jdasnt3 · 05-01-2017, 02:02 PM

My girlfriend weight 420, but I've never noticed. ..

Michigan1LTRS · 05-01-2017, 02:05 PM

I just tell um you are hurting my power to weight ratio and you gotta get out.

Egon · 05-01-2017, 02:28 PM

You won't notice it in day to day driving, but if you are at the track in any capacity, track day, autocross, drag racing you will be slower with the extra weight. The possible exception to this rule would be for example a truck with very little weight over the rear wheels causing traction issues.

00 Trans Ram · 05-01-2017, 02:46 PM

Well, a gallon of gas weighs 6lbs. So, your 120lb girlfriend is essentially a full tank of gas.

Yes, that makes a difference.

However, not as big as you might think. An additional 120lbs will add 0.1 second to a typical 1/4 mile time. But, remember that 1/4 mile times are more about using HP to get weight moving - i.e.: from a standstill at 0mph up to 120mph.

You're road racing, I'm guessing. That's more about going from 80mph to 130mph (straight speeds). That kind of accel is far less about weight, and more about overcoming wind resistance.

TLDR - unless you can run consistent laps within 0.5 seconds of each other, you won't notice much difference with or without a passenger.

LuvMI · 05-01-2017, 07:20 PM

Quote:

Originally Posted by gw6211

pictures or she doesnt.

Lol.

Rockmonstir · 05-01-2017, 08:05 PM

I'd have her jump on a scale before and after to log some performance data.

05-01-2017, 11:28 AM	#1
Marty McFlew Banned Drives: 17 SuperSport Camaro 6 on the Flo' Join Date: Feb 2016 Location: USA Posts: 1,507	Does your car take a Performace hit... Does your car take a noticeable Performance hit with a passenger?

05-01-2017, 11:58 AM	#5
mbar Drives: 2016 1SS Join Date: Jan 2016 Location: DC Posts: 927	My lap times on a 2 miles track would be 1-2 seconds faster. However, the balance of the car is not as good on corners without a passenger. __________________ 1SS, Black, Black Wheels, A8, MRC, NPP

05-01-2017, 02:02 PM	#9
jdasnt3 Drives: 18 Silverado 1500 Join Date: Dec 2015 Location: Bradenton, FL Posts: 1,721	My girlfriend weight 420, but I've never noticed. .. __________________ 16 Red Hot 2SS A8: NPP, CAI Cold air, Ported TB, Fasterproms Ported intake, E85 flex, Formatto tuned. 11.80@118 with 1.92 60' (600-700 DA) on stock run flats.

05-01-2017, 02:05 PM	#10
Michigan1LTRS Blessed ❤️ Drives: 2017 1LT RS I4 Join Date: Sep 2016 Location: Indiana Posts: 2,577	I just tell um you are hurting my power to weight ratio and you gotta get out. __________________ 2017 1LT RS I4 A8 BLACK ON BLACK Kindness and compassion #OthersFirst

05-01-2017, 02:28 PM	#11
Egon Drives: 2014 2SS/RS 1LE Join Date: May 2013 Location: Charlotte NC Posts: 977	You won't notice it in day to day driving, but if you are at the track in any capacity, track day, autocross, drag racing you will be slower with the extra weight. The possible exception to this rule would be for example a truck with very little weight over the rear wheels causing traction issues. __________________

05-01-2017, 11:47 AM	#2
Chadicus Drives: 2017 2SS M6 Join Date: Apr 2017 Location: Billings MT Posts: 773	Never noticed one. My girlfriend only weighs 120 and I never really push it too much with her in the car. I would never take her with me down a dragstrip or on a track day.

05-01-2017, 12:33 PM	#7
Eric SS #becauseracecar Drives: 2016 SS Sedan, 2016 Camaro SS Join Date: May 2015 Location: Phoenix Posts: 2,959	I had a passenger in my car for a track day session a few weeks ago that weighed probably around 300lbs and I could tell a noticeable difference in the corners and braking. I couldn't really notice is on the straights.

05-01-2017, 01:51 PM	#8
C5Txfan Drives: 2004 Corvette Join Date: Jan 2016 Location: Ft Worth Tx Posts: 115	The old rule of thumb about weight used to be (might still) be a 10 HP loss for every extra 100 lbs.

05-01-2017, 02:46 PM	#12
00 Trans Ram Drives: 2017 2SS Join Date: Jun 2014 Location: United States Posts: 636	Well, a gallon of gas weighs 6lbs. So, your 120lb girlfriend is essentially a full tank of gas. Yes, that makes a difference. However, not as big as you might think. An additional 120lbs will add 0.1 second to a typical 1/4 mile time. But, remember that 1/4 mile times are more about using HP to get weight moving - i.e.: from a standstill at 0mph up to 120mph. You're road racing, I'm guessing. That's more about going from 80mph to 130mph (straight speeds). That kind of accel is far less about weight, and more about overcoming wind resistance. TLDR - unless you can run consistent laps within 0.5 seconds of each other, you won't notice much difference with or without a passenger.

05-01-2017, 08:05 PM	#14
Rockmonstir Drives: 2017 Camaro SS 1LE Join Date: Apr 2017 Location: Sacramento Posts: 112 View My Garage	I'd have her jump on a scale before and after to log some performance data. __________________ I pick things up then put them back down.

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