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Sorry let me clarify. For performance of course weight matters. For a true purist, weight matters. For consumers, most don’t give a crap. Thus we have a bunch of huge, heavy cars and SUVs. No one I know with a S63 or 750/60 talks about weight. They talk about power and prestige and my leather is made from cows who drink Dom P.Performance is just as directly tied to weight as it is horsepower, so it definitely does matter especially when most Lexus vehicles are underpowered and some are badly overweight. Does the RX owner care about weight? Nope. Does the LC, LS or IS shopper care about weight? Maybe not WEIGHT per se, but they feel and care about acceleration and performance, and weight is the anchor that will sink that ship faster than anything.
The LS crossing 5,000 lbs when it only has a tad north of 400hp is a problem: the car is slow off the line, the engine works harder to move the car, and it definitely sounds like a V6 while doing it. The S560 with a V8 and AWD weighs 4,800 lbs. The S65 AMG weighs under 5k lbs and the BMW M760iL xDrive weighs a hair over 5k. The BMW 740i weighs almost a thousand pounds less than the LS 500, and both have 6 cylinder engines. So the LS needs an extra ~90hp to keep pace with the BMW because of it.
IS has the advantage of being built on the older "New N" platform, so it could come in at or under 4k lbs once the IS 500 or IS F comes to fruition. That would be killer, and will make the car fast and fun to drive like an M3 but with different power delivery.
Rumors have a potential LS F weighing 5,500 - 5,700 lbs. That is as much as a freaking Land Cruiser, and it means the LS will be dealing with an extra ~600lbs compared to the S65/63 and M760Li. That's going to hurt the LS F just as much as it has hurt the LS 500.
So yeah... weight matters, especially for performance vehicles. But Lexus has the double whammy of having cars that are overweight and generally underpowered. Furthermore, without turbos and a better AWD system, Lexus vehicles lack the off-the-line traction as well as low- to mid-range punch from turbos.
... but what will it cost if they add AWD to the LS F? Another 200 lbs? Let's just round up to 6,000 lbs so owners have to file for a oversize/overweight permit when they purchase!
We have been Lexus enthusiasts for a long time. There was a time they were relatively light or lighter than the competition. That ended when platforms started to be shared. A LC based off a LS will always weigh a ton. A LC with its own platform would be much lighter.
So that leaves power and we all know Lexus IS behind here in most cases. So hopefully it’s being worked on.
I just think we think differently than most consumers and my age tells me the more I know, the less I know lol.