Going bigger
#21
Skyline, it is the TIRES circumfrance, not the rims that determine the change in the speedo reading. Go to Advanced tire or similar web site that has a calculator that shows the different speedo readouts between two different sized tires.
What sized tire did you go to?
One of the guys here drag races - and didn't he go to smaller rims/tires to save weight? Seems familiar. Was it Bigjacksauto about two years ago?
What sized tire did you go to?
One of the guys here drag races - and didn't he go to smaller rims/tires to save weight? Seems familiar. Was it Bigjacksauto about two years ago?
Last edited by whopper; 05-15-2013 at 10:48 AM.
#25
this is the change i made as well that is why i'm saying i'm not sure how performance would be improved with 20's. I was on tire rack comparing wheel weights and about in any brand of wheel the 20's were about 5-6 pounds heavier than the same wheel in an 18" version.
#26
this is the change i made as well that is why i'm saying i'm not sure how performance would be improved with 20's. I was on tire rack comparing wheel weights and about in any brand of wheel the 20's were about 5-6 pounds heavier than the same wheel in an 18" version.
#27
Tire tread has a lot more to do with it than you yourself seem to think. My old tires on my 16's were non directional, well actually they look half directional until you find that you have to run them in the opposite direction on one side vs the other. They were sidewall specific insted of tread direction specific lol. But my new wheels are directional. Less rolling resistance makes a huge difference. Also 5-6 pounds makes huge difference to humans (think bicycle) but to a car it make less of a difference. But yes it does still make a difference but then rolling resistance can end up making a bigger difference.
#28
When you compare the same wheel of coarse the larger wheel will be heavier. But I am talking about different brands or models having different weights. Many times yes the 20's will be heavier but between 18's and 16's of the same or atleast close width there are many on both sides of the fence. Bottom line for what my point has been here is that just the 16" vs 17" vs 18" does not automatically make the larger rim heavier. Especially when the tires may weigh less for the same overall height tire. But I can even find some 20's that weigh less then some 16's not to mention 18's.
#29
Extreme examples here but here is a 18" that weighs 17.8 http://www.tirerack.com/wheels/Wheel...19&sort=Weight
and here is a 16" that weighs 23.7 http://www.tirerack.com/wheels/Wheel...25&sort=Weight
and here is a 16" that weighs 23.7 http://www.tirerack.com/wheels/Wheel...25&sort=Weight
#30
Extreme examples here but here is a 18" that weighs 17.8 http://www.tirerack.com/wheels/Wheel...19&sort=Weight
and here is a 16" that weighs 23.7 http://www.tirerack.com/wheels/Wheel...25&sort=Weight
and here is a 16" that weighs 23.7 http://www.tirerack.com/wheels/Wheel...25&sort=Weight