relhok Posted November 14, 2005 Share Posted November 14, 2005 So I was playing around on tirerack.com and here's what I found: Lightest rim--17" SSR competitions weigh 12.8 lbs compared to around 20 lbs stock Lightest tire--General Tire's Exclaim UHP weighs 18 lbs compared to 23 lbs stock This combo should reduce unsprung rotational mass by appoximately 13 lbs at each corner lightening the car by 52 lbs overall. Can anyone calculate or guess the effect on 0-60 and 1/4 mile times? What about handling? Link to comment Share on other sites More sharing options...
PGT Posted November 14, 2005 Share Posted November 14, 2005 Can anyone calculate or guess the effect on 0-60 and 1/4 mile times? better What about handling? again, better Link to comment Share on other sites More sharing options...
wukindada Posted November 14, 2005 Share Posted November 14, 2005 SSR.....Nice;) General tire......Molded Sh1t! Go with those wheels, add a few pounds & go with a Pirelli;) Toyota 6EATS .........SUCK!!!!!! Link to comment Share on other sites More sharing options...
Xenonk Posted November 14, 2005 Share Posted November 14, 2005 it's just feels like you just dumped out over 200 lbs worth of deadweight out of the car.. so you MAY get a good .2 second improvement overall on your 1/4 times.. that's just my 2 cents.. Keefe Link to comment Share on other sites More sharing options...
hovied Posted November 14, 2005 Share Posted November 14, 2005 Go with PireLLi? Talk about shiiiiiiiite.... ______________ tHe HoV Link to comment Share on other sites More sharing options...
legacysteve68 Posted November 14, 2005 Share Posted November 14, 2005 who wants general tires? Link to comment Share on other sites More sharing options...
magnetic1 Posted November 14, 2005 Share Posted November 14, 2005 Choosing a tire also depends on what you plan on using the car for... autocross? street? drag racing? Are you willing to sacrifice life for grip? etc etc. Im assuming you want a good all around tire that lasts long? Id recommend the following: Toyo T1S/T1R: Good all around tire, especially in the wet. Not the grippiest tire, but lasts a decent amount and gives good performance. Weighs about 20 lbs and costs roughly $125-ish Hankook Z212: Good dry grip tire... 22lbs roughly $115-ish Now if you jump into the 2354017 size... you can get RA1s... but those wouldnt work very well on the street all the time. Free Sonax Cleaner Deal http://www.brakeswap.com Carbotech, Hawk, PFC, DBA Rotors, Motul, Wilwood, Castrol... Great service. No bumping required ! Link to comment Share on other sites More sharing options...
relhok Posted November 14, 2005 Author Share Posted November 14, 2005 This was not intended to be a discussion on what rims/tires are good or bad. SSRs wouldn't be my first rim choice and generals wouldn't be my first tire choice. They are just the lightest combo I could come up with at tirerack.com. I was wondering if the performance gain might be worth the sacrifice in rim style and tire quality. Could this combo help a 5EAT hang with a 5MT sporting heavier 18" wheels? Link to comment Share on other sites More sharing options...
magnetic1 Posted November 14, 2005 Share Posted November 14, 2005 This was not intended to be a discussion on what rims/tires are good or bad. SSRs wouldn't be my first rim choice and generals wouldn't be my first tire choice. They are just the lightest combo I could come up with at tirerack.com. I was wondering if the performance gain might be worth the sacrifice in rim style and tire quality. Could this combo help a 5EAT hang with a 5MT sporting heavier 18" wheels? Depends where youre trying to "hang". Street, prolly wouldnt see much difference. Drag racing... maybe a little (too many factors here.. driver, traction, conditions, etc)... autocross/track: yes. relhok, email me... Ive got a couple SSR packages below TR pricing that might work out for you Free Sonax Cleaner Deal http://www.brakeswap.com Carbotech, Hawk, PFC, DBA Rotors, Motul, Wilwood, Castrol... Great service. No bumping required ! Link to comment Share on other sites More sharing options...
red beast Posted November 14, 2005 Share Posted November 14, 2005 i gained 10lbs per corner. you can feel it Link to comment Share on other sites More sharing options...
rexster Posted November 14, 2005 Share Posted November 14, 2005 it makes a big difference in braking as well. throw some heavier wheels/tires on there and you're going to have longer braking distances. Link to comment Share on other sites More sharing options...
LittleBlueGT Posted March 2, 2006 Share Posted March 2, 2006 So I was playing around on tirerack.com and here's what I found: Lightest rim--17" SSR competitions weigh 12.8 lbs compared to around 20 lbs stock Lightest tire--General Tire's Exclaim UHP weighs 18 lbs compared to 23 lbs stock This combo should reduce unsprung rotational mass by appoximately 13 lbs at each corner lightening the car by 52 lbs overall. Can anyone calculate or guess the effect on 0-60 and 1/4 mile times? What about handling? Many people say that each pound of weight you lose at the wheels is comparable to 12 - 14 lbs fron the car. I would say it feel like you lost 600 lbs from the car. That would be a huge difference! Full tune of 68HTA, KSTech 73 MAF, Racer X FMIC and ID1000s................by the DataLog Mafia!!! Link to comment Share on other sites More sharing options...
praedet Posted March 2, 2006 Share Posted March 2, 2006 ^^^It is not that simple. Actually lbs off the tires have the biggest effect. It ends up between a 1.5 and 2 factor depending on where you are losing the weight from. (tire, outside of the rim, inside of the rim, etc.) If you have the exact same weight, but all the weight moves from the center to the edge, then you harm performance, and the reverse is also true. Ted Link to comment Share on other sites More sharing options...
Boostjunkie Posted March 2, 2006 Share Posted March 2, 2006 +1. Losing 1 lb of rotational weight is NOT equal to losing 12-14 lbs of static weight. Even at the most optomistic its roughly 1 lb rotational = 4 lbs static and that if you lose all the weight at the outer edge of the tire, which is not a real world scenario. Link to comment Share on other sites More sharing options...
Xenonk Posted March 2, 2006 Share Posted March 2, 2006 So I was playing around on tirerack.com and here's what I found: Lightest rim--17" SSR competitions weigh 12.8 lbs compared to around 20 lbs stock Lightest tire--General Tire's Exclaim UHP weighs 18 lbs compared to 23 lbs stock This combo should reduce unsprung rotational mass by appoximately 13 lbs at each corner lightening the car by 52 lbs overall. Can anyone calculate or guess the effect on 0-60 and 1/4 mile times? What about handling? find a better tire for better handling. You can sacrifice a little bit of the weight off the tire for grip. Read this: http://legacygt.com/forums/showthread.php?t=24305 I dont think you'll end up shaving .3 seconds off your 1/4 times, driver error and bad launch can be a bigger difference than .3 seconds. Keefe Link to comment Share on other sites More sharing options...
LittleBlueGT Posted March 2, 2006 Share Posted March 2, 2006 Understand it depends on a variety of factors. And of course it depends on where on the wheel the weight is taken off. I just say a program that a brake specialist said that each pound of weight saved on the brakes was comparable to 14 lbs of weight in the car. I figured he was a little overly optimistic, but he was talking about brakes were the weight is taken off even closer to the center then on a wheel or tire. I think it also depends at what speed, the lower the speed the more the affect, the higher the speed the less the effect. Full tune of 68HTA, KSTech 73 MAF, Racer X FMIC and ID1000s................by the DataLog Mafia!!! Link to comment Share on other sites More sharing options...
jazzymt Posted March 2, 2006 Share Posted March 2, 2006 http://legacygt.com/forums/showthread.php?t=28199 [CENTER][URL="http://legacygt.com/forums/showthread.php?t=18504"]Subaru Plug & Play Aux-in Mod[/URL][/CENTER] [CENTER][URL="http://www.jazzyengineering.com"]www.jazzyengineering.com[/URL][/CENTER] Link to comment Share on other sites More sharing options...
Yukonart Posted March 2, 2006 Share Posted March 2, 2006 find a better tire for better handling. You can sacrifice a little bit of the weight off the tire for grip. Read this: http://legacygt.com/forums/showthread.php?t=24305 I dont think you'll end up shaving .3 seconds off your 1/4 times, driver error and bad launch can be a bigger difference than .3 seconds. Best advice yet. Weight and other factors aside, NEVER compromise on the quality and build of your tires, given the purposes you have for them. People on the STi board used to look for any way to get lighter tires than the stock RE070s. While the 70s ARE heavy for a 17" tire, they have incredible sidewall rigidity and cornering stability . . . well worth the weight necessary in the design if you plan to utilize those facts in your driving. Wheels, on the other hand. . . so long as they're forged and of good design, will always benefit your car in handling and braking. Link to comment Share on other sites More sharing options...
lhsa Posted March 15, 2006 Share Posted March 15, 2006 what if the wheels are cast aluminium? Link to comment Share on other sites More sharing options...
Garandman Posted March 15, 2006 Share Posted March 15, 2006 FWIW the five spoke 17x7 rims on my Outback weighed 22 lbs. The BBS RK's that I put on are 18.0. Who Dares Wins スバル Link to comment Share on other sites More sharing options...
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