Loss Of Punch (Power) w/tire and wheel swap
05-01-2008, 03:36 PM
#1
Thread Starter
Join Date: Apr 2008
Location:
Posts: 4
Loss Of Punch (Power) w/tire and wheel swap
Just changed my tires and wheels yesterday from the stock 235/55R17 to 265/35R18's. Lost about 1-1/2" in tire height. I knew that was going to happen but what I didn't expect was the car to loose a little throttle response. Going into the dealer this weekend to have them reconfigure the car for that tire size. Does anyone know if this is because the PCM is sensing a change of drivetrain enviroment and needs to be adjusted?
2007 Mustang GT
Pypes Catback M80 exhaust
No other mods yet
2007 Mustang GT
Pypes Catback M80 exhaust
No other mods yet
05-02-2008, 06:08 AM
#2
2nd Gear Member
Join Date: Mar 2008
Location: San Juan, Puerto Rico
Posts: 317
RE: Loss Of Punch (Power) w/tire and wheel swap
Nope it is because of the greater rotational mass. When I was n/a I was at 312hp and I went down to 298 by switching from 235's to 275's + rims.
Andrew
Andrew
05-04-2008, 07:05 PM
#5
5th Gear Member
Join Date: Jul 2006
Location: New Orleans
Posts: 4,491
RE: Loss Of Punch (Power) w/tire and wheel swap
Bigger wheels = worse performance. Period. There is no amount of tuning that can reduce rotational mass. My car came with the 18s. It didn't take me long to ditch them for some 17s.
05-04-2008, 07:08 PM
#6
2nd Gear Member
Join Date: Nov 2006
Location: Caracas, Venezuela
Posts: 401
RE: Loss Of Punch (Power) w/tire and wheel swap
ORIGINAL: Androdz2
Nope it is because of the greater rotational mass. When I was n/a I was at 312hp and I went down to 298 by switching from 235's to 275's + rims.
Andrew
Nope it is because of the greater rotational mass. When I was n/a I was at 312hp and I went down to 298 by switching from 235's to 275's + rims.
Andrew
05-05-2008, 12:04 PM
#7
3rd Gear Member
Join Date: Jun 2007
Posts: 500
RE: Loss Of Punch (Power) w/tire and wheel swap
ORIGINAL: Androdz2
Nope it is because of the greater rotational mass. When I was n/a I was at 312hp and I went down to 298 by switching from 235's to 275's + rims.
Andrew
Nope it is because of the greater rotational mass. When I was n/a I was at 312hp and I went down to 298 by switching from 235's to 275's + rims.
Andrew
Does the better grip, counter act the lost in hp?
05-05-2008, 02:10 PM
#9
2nd Gear Member
Join Date: Mar 2008
Location: San Juan, Puerto Rico
Posts: 317
RE: Loss Of Punch (Power) w/tire and wheel swap
ORIGINAL: Lito
That's why I love the dynapack.
ORIGINAL: Androdz2
Nope it is because of the greater rotational mass. When I was n/a I was at 312hp and I went down to 298 by switching from 235's to 275's + rims.
Andrew
Nope it is because of the greater rotational mass. When I was n/a I was at 312hp and I went down to 298 by switching from 235's to 275's + rims.
Andrew
05-05-2008, 02:12 PM
#10
2nd Gear Member
Join Date: Mar 2008
Location: San Juan, Puerto Rico
Posts: 317
RE: Loss Of Punch (Power) w/tire and wheel swap
ORIGINAL: SuperSonic05
I can't believe it would go down that much. My 18 rims and 285 tires are only a few pounds heavier then my stock 17s and tires.
Does the better grip, counter act the lost in hp?
ORIGINAL: Androdz2
Nope it is because of the greater rotational mass. When I was n/a I was at 312hp and I went down to 298 by switching from 235's to 275's + rims.
Andrew
Nope it is because of the greater rotational mass. When I was n/a I was at 312hp and I went down to 298 by switching from 235's to 275's + rims.
Andrew
Does the better grip, counter act the lost in hp?
Andrew