Quote:
Originally Posted by Dzmitry
Sounds more like your particular combo is awful heavy. If your wheels come in at 15.8 lbs, then you have a 28 lb tire. There are a lot of tires that way MUCH less than this in that size. In fact, MOST tires of that size way much less than this, which comes to my surprise as to why these are so heavy? Maybe the performance in them stands out that much more? I would be surprised.
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Now that you've mentioned -- yes, SX2s spec weight in that size is
26.2 lbs [1].
Still not clear where the extra 1.8 lbs come from; I don't think TPMS + center caps + balancing weights + dust and dirt would account for that.
Perhaps just an imprecision of my kitchen scales when used on an uneven pavement of my garage (I did try multiple locations though)...
Here's a quick table of weight SX2s vs
Primacy HP in different sizes:
Code:
Size | SX2 | PHP | Difference
215/45R17 | 23.0 lbs | 20.8 lbs | 2.2 lbs
245/40R17 | 26.2 lbs | 22.5 lbs | 3.7 lbs
So yeah, apparently SX2s are so heavy that inertia-wise they outweigh the benefit of lightweight wheels. Still much faster laptimes though.
Perhaps when I'm ready for RE71Rs I can get well
below 40 lbs for the wheel+tire combo :P
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I couldn't easily find the weight of the OEM PP wheels without tires, but it
used to be known to be ~22 lbs.