GT350R Wheel Porn

[high_glove_side]

Certainly a trick piece... but saying it's 15 lbs lighter than an equivalent wheel is a bit of a stretch, unless you're calling an economy rim an equivalent.

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[Quiksilver15]

These are barely lighter than TSW Bathurst 19's

In the same widths? What's barely?

 

[Need 4 Steed]

The 19 x 10.5 Bathurst is around 22.5 and you can get 10+ of them for the same price. Weight difference of about 4 lbs. doesn't seem worth it unless you have quite a bit of money to dump into rims. And if that is the case, 3 sets of forged rims and tires sounds like a better option.


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[drabon74]

Bathurst 19x9 = 20.02, 19x9.5 = 21.4 20x10 = 22.4

 

[krt22]

Bathurst 19x9 = 20.02, 19x9.5 = 21.4 20x10 = 22.4

The 19x9.5 is 22.5lbs and the 20x10 is 24.45lbs according to their website, either way, not wide enough

GT350R Front wheel-19x11
GT350R Rear wheel-19x11.5

The 19x10.5 is the closest you can get at 22.4lbs, safe to assume if they were offered in 19x11.5 they would be in the 23-24lb range. At 23.5lbs each, that would represent a 30% increase in unsprung rotating mass. Pretty significant different if you ask me

 

[ForTehNguyen]

those last few pounds are $$$$$$

 

[bballr4567]

Those are absolutely sick. Great technology and crazy they have got them "down" in price to be able to use on a factory car.

 

[krt22]

those last few pounds are $$$$$$

yep..Like the crazy road bike guys who will drop 10k on a carbon frame/titanium/etc to save a few pounds total

 

[Need 4 Steed]

Hmmm. Now that you mention it. Titanium wheels may be a decent route at about half the price


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[krt22]

Hmmm. Now that you mention it. Titanium wheels may be a decent route at about half the price


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Considering forged monoblock wheels out of relatively cheap aluminum run 1-2k per wheel, I don't see Titanium being a cheaper solution to the CF wheels at 2.5k each

 

[drabon74]

The 19x9.5 is 22.5lbs and the 20x10 is 24.45lbs according to their website, either way, not wide enough

GT350R Front wheel-19x11
GT350R Rear wheel-19x11.5

The 19x10.5 is the closest you can get at 22.4lbs, safe to assume if they were offered in 19x11.5 they would be in the 23-24lb range. At 23.5lbs each, that would represent a 30% increase in unsprung rotating mass. Pretty significant different if you ask me

in the wheels / tires section they have all been weighed on a digital scale.. weights I posted are actual weights

Did not realize the GT 350 had such wide rims, wow that's a lot of rubber

 

[Need 4 Steed]

BBS forged magnesium are a bit cheaper


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[PonyPower]

The 19 x 10.5 Bathurst is around 22.5 and you can get 10+ of them for the same price. Weight difference of about 4 lbs. doesn't seem worth it unless you have quite a bit of money to dump into rims. And if that is the case, 3 sets of forged rims and tires sounds like a better option.


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TSW is lightweight to their "rotary forging" process, it's not a true forged wheel though. These CF ones are far stronger. And think unsprung weight not weight. This is much more equivalent to the car weighing 100 lbs less than 16 lbs due to where that weight is distributed.

 

[Need 4 Steed]

Yea. Depends where the weight difference is. But I would assume the CF barrel ways next to nothing. It would be nice to get inertia info from wheel manufacturers


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[treynor]

TSW is lightweight to their "rotary forging" process, it's not a true forged wheel though. These CF ones are far stronger. And think unsprung weight not weight. This is much more equivalent to the car weighing 100 lbs less than 16 lbs due to where that weight is distributed.

I did the math on rotational inertia many years ago ; the answer is "it depends" but if you assume the weight distribution is biased toward the outer part of the rim rather than the hub, then a pound saved on the wheel is roughly equivalent to 1.5 pounds saved on the car. So a 16 lb wheel savings acts like a 24 lb vehicle savings.

By the same logic, tire weight makes a larger difference because its mass has a larger effective radius.

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