Lion77
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Yah but you're forgetting WHERE the mass is. The mass of the wheels has a lot less inertia than the tires due to the radius being much smaller. Think about putting a weight on the end of a rope and swinging it around in a circle. It's easy to do the same weight with a short rope, its hard if the rope is long (larger diameter).
Most of the weight in the tire is in the tread, not the carcass / sidewall, which is one of two reasons why going to 35's takes a big performance hit on handling, braking and acceleration. The weight is the furthest out from the center of the axle / hub. The wheel's mass (barrel) is much further in. 3lbs per wheel is not likely to be noticeable, but yes, 11~12lbs per a wheel is noticeable.
I could certainly tell the difference between the 11lbs per wheel I shed from the OE bead locks by going to the 705's and wouldn't go back, but it wasn't as earth shattering as some people are thinking, more like a subtle but noticeable improvement.
It's worth maybe 1 or 2 tenths of a second in the quarter mile even with that much weight reduction, so I really don't think you could tell the difference between my 705's and say the OE alloys, 25.2 vs. 29lbs per wheel. There's a point of diminishing returns. If you have bead locks and want to maintain bead-lock-like function, moving to Methods makes sense, you get a weight reduction as a bonus, but aside from that, if I had OE alloys, probably would not have bothered unless I still had wanted the bead grip (which in my case I did, but a lot of people don't care about that).
12 pounds total isn't much. 44 lbs total is noticeable but not earth shattering and the Pro Cal makes a far bigger difference than lightweight wheels did (I upgraded piecewise, so I did the Pro Cal first at 5k miles, then ran that all last year no other mods, then got the 705's in late Jan this year, so I had a lot of time with each stage of upgrades). I'm not saying they aren't worth it, but if I had to choose one or the other, Pro Cal hands down gives you far more bang for buck!
You're getting a healthy 1/2 second off your quarter mile from a Pro Cal and must better shift mapping and throttle mapping.
Most of the weight in the tire is in the tread, not the carcass / sidewall, which is one of two reasons why going to 35's takes a big performance hit on handling, braking and acceleration. The weight is the furthest out from the center of the axle / hub. The wheel's mass (barrel) is much further in. 3lbs per wheel is not likely to be noticeable, but yes, 11~12lbs per a wheel is noticeable.
I could certainly tell the difference between the 11lbs per wheel I shed from the OE bead locks by going to the 705's and wouldn't go back, but it wasn't as earth shattering as some people are thinking, more like a subtle but noticeable improvement.
It's worth maybe 1 or 2 tenths of a second in the quarter mile even with that much weight reduction, so I really don't think you could tell the difference between my 705's and say the OE alloys, 25.2 vs. 29lbs per wheel. There's a point of diminishing returns. If you have bead locks and want to maintain bead-lock-like function, moving to Methods makes sense, you get a weight reduction as a bonus, but aside from that, if I had OE alloys, probably would not have bothered unless I still had wanted the bead grip (which in my case I did, but a lot of people don't care about that).
12 pounds total isn't much. 44 lbs total is noticeable but not earth shattering and the Pro Cal makes a far bigger difference than lightweight wheels did (I upgraded piecewise, so I did the Pro Cal first at 5k miles, then ran that all last year no other mods, then got the 705's in late Jan this year, so I had a lot of time with each stage of upgrades). I'm not saying they aren't worth it, but if I had to choose one or the other, Pro Cal hands down gives you far more bang for buck!
You're getting a healthy 1/2 second off your quarter mile from a Pro Cal and must better shift mapping and throttle mapping.
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