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Cars We Drive! - Page 555

post #8311 of 14085
I drive a '13 LR4 with the luxury package, premium sound, etc. Love it to pieces. That said, there's a part of me that misses having more of a car, as Land Rovers definitely drive like trucks. (I went from BMW to Land Rover.) I'll be interested to see how the '14 remodeled X5 hits. The first leaked images I saw did not appeal to me, but I have a feeling it'll get better.
post #8312 of 14085
Some car physics: power is proportional to the cube of speed. So if it takes you 20 HP to maintain 50 MPH, doubling the speed to 100 MPH requires at least 8 times (2^3) as much power, or 80 HP, all else being equal.

What is more relevant for everyday driving is that kinetic energy is proportional to the square of your speed. Go 2x as fast, and you are using at least 4x as much energy. This becomes a big problem for braking. To brake to a complete stop, you will need lots more room for a higher speed relative to a lower speed. If you can stop in 100 feet from 60 MPH, to stop from 120 MPH needs at least 400 feet.

I use the weasel words "at least" a lot because many other things are affected, and not all other things are held constant. For example, your brakes now need to dissipate four times as much heat as before, and may be inadequate (inadequate cooling, fluid boiling, pad fade, etc.), and that may affect your stopping distance. Or your tires may not deal well with an extended deceleration (they overheat and lose traction).

For that M5 crash, I'd say they were more lucky than saved by the car. Certainly the car helps a lot, but they were lucky they did not meet a tree or telephone pole, because the outcome would almost certainly have been much worse.
post #8313 of 14085
Quote:
Originally Posted by A Y View Post

For that M5 crash, I'd say they were more lucky than saved by the car. Certainly the car helps a lot, but they were lucky they did not meet a tree or telephone pole, because the outcome would almost certainly have been much worse.

1/2 and 1/2.

I had a Saab 900 turbo years ago, crashed it and was lucky to live.

It was raining and I was on a beltway exit, the car tried to swap ends on me and as I turned into the skid the car jumped on the grass which is like a skating rink in the wet, no deceleration.

In retrospect I might have been smarter to let the car rotate, who knows, but on the grass was a tall light post which I struck sideways directly into my B pillar.

So, 1/2 was luck that it hit that exact spot and not a foot forward but the other 1/2 is the fact that that Saab was built like a tank.

Anyone see that top gear where they drop a Saab and BMW on its roof? They built their pillars so strong that when they went rallying they didn't need a roll cage.

This is part 2 of a great video on a brand that's unfortunately no more (part 2 has the roof crash):

http://www.topgear.com/uk/videos/a-tribute-to-saab-part-2-series-18-episode-5


Part 1 is here, but the roof crash test is in part 2 above, so if you want to see the whole thing (worth watching) start here, the 99 turbo is my favorite:

http://www.topgear.com/uk/videos/a-tribute-to-saab-part-1-series-18-episode-5
post #8314 of 14085
So for the family guys around here, what is the best 3-row? GL, Explorer, Pilot, other?
post #8315 of 14085
Quote:
Originally Posted by A Y View Post

Some car physics: power is proportional to the cube of speed. So if it takes you 20 HP to maintain 50 MPH, doubling the speed to 100 MPH requires at least 8 times (2^3) as much power, or 80 HP, all else being equal.

What is more relevant for everyday driving is that kinetic energy is proportional to the square of your speed. Go 2x as fast, and you are using at least 4x as much energy. This becomes a big problem for braking. To brake to a complete stop, you will need lots more room for a higher speed relative to a lower speed. If you can stop in 100 feet from 60 MPH, to stop from 120 MPH needs at least 400 feet.

I use the weasel words "at least" a lot because many other things are affected, and not all other things are held constant. For example, your brakes now need to dissipate four times as much heat as before, and may be inadequate (inadequate cooling, fluid boiling, pad fade, etc.), and that may affect your stopping distance. Or your tires may not deal well with an extended deceleration (they overheat and lose traction).

For that M5 crash, I'd say they were more lucky than saved by the car. Certainly the car helps a lot, but they were lucky they did not meet a tree or telephone pole, because the outcome would almost certainly have been much worse.

I'm no math genius, but 20 cubed is 8000, not 80.
post #8316 of 14085
Quote:
Originally Posted by akatsuki View Post

So for the family guys around here, what is the best 3-row? GL, Explorer, Pilot, other?

Probably the GL. The new one is handsome as well. Motor Trend SUV of the year.
post #8317 of 14085
See gtrs all the time, hideous monstrosities.
post #8318 of 14085
Quote:
Originally Posted by whiteslashasian View Post

Probably the GL. The new one is handsome as well. Motor Trend SUV of the year.

FYI, it won the same award in its original iteration too.
post #8319 of 14085
Quote:
Originally Posted by Piobaire View Post

I'm no math genius, but 20 cubed is 8000, not 80.

It's not the cube of the actual horsepower but the cube of the multiple the speed increased by, and I did have a mistake in there, too:

100MPH/50MPH = 2. 2^3 = 8 is the increase in horsepower needed. So if it takes 20 HP to maintain 50 MPH, it takes 8*20HP = 160 HP to maintain 100 MPH.

If we want to quadruple the speed, it takes 4*4*4=64 times more horsepower.
post #8320 of 14085
Everyone's thoughts on the Jeep SRT8?

post #8321 of 14085
Quote:
Originally Posted by GreenFrog View Post

Everyone's thoughts on the Jeep SRT8?
before i reply, is this the Cars we Drive, or Cars and Penor Size thread?
post #8322 of 14085
Quote:
Originally Posted by HRoi View Post

before i reply, is this the Cars we Drive, or Cars and Penor Size thread?

ehhh.. was originally gonna say the former, but fuck it! both (just this one time; don't want to derail the thread)!
post #8323 of 14085
Quote:
Originally Posted by Piobaire View Post


I should have been more explicit. I tend to dislike the various types of douchebags that tend to gravitate towards BMW 3 series like flies to shit. Not saying everyone in a 3 series is a douchebag but it's hard to deny the vast majority are douchebags of one sort or another. Saying only a 3 series is a "real BMW" is exactly what a 3 series driver would say.

FWIW, if I had to drive a BMW, would be an M5 or a 700 series.

 

My first BMW love was the 2002 quickly followed by the 3.0 CSL.  I just like smaller cars in general.  My first BMW was an E36 325i and I was hooked.

 

I thought the 1 series would take BMW back to the 2002 days since the 3 has steadily gotten bigger and heavier over the years but alas that was not the case. 

 

5s don't impress me.  They remind me of the pretty girl's fatter older sister:  same gene pool but she's lazier, slower and greedier than her sister.  Sure she can carry more groceries but who dates a girl so that she can carry groceries?

 

The original 6 series was a great friggin car but it is a travesty to what they have done to the current 6 series which is now available in a 4 door model. Ugh

 

Don't get me started on the 7 series.  If you want a land yacht buy a Mercedes

 

X series was the worst sellout by BMW as far as I am concerned.  A BMW SUV?  Really? 

 

A M car should not be a status symbol to park outside of starbucks.  It should not be available in an automatic just to make it easier for people to drive.  PDC on an M?  Please.  It needs to be a raw machine like the E30 M3.  It is supposed to thrill you

 

A 3er  with naturally aspirated engine (don't get me start ranting about forced induction and yes I know there was a turbocharged 2002), rear wheel drive only (x-drive sucks - leave AWD to Audi & Subaru) with as little electronic doodads as possible and 3 pedals is a real BMW to me.  Everything else on the road are just poseurs with a roundel

 

In my humble (read: arrogant) opinion of course sly.gif

post #8324 of 14085
^ the 1 is really the spiritual successor to the e30 and e36. It really isn't feasible to make a modern 2002 anymore...with the safety regulations and minimum kit demanded by buyers today, you can't keep the weight down. But I've driven the 1M on the track, it's absolutely fantastic.

And the M cars don't come in automatic. Unless that was a dig at DCT, in which case it's a nonsense comment. I certainly get why people would prefer a manual on a sporting car, but the DCT is a quantum leap in racing technology, not something made for people who can't drive manual
post #8325 of 14085
Quote:
Originally Posted by HRoi View Post

^ the 1 is really the spiritual successor to the e30 and e36. It really isn't feasible to make a modern 2002 anymore...with the safety regulations and minimum kit demanded by buyers today, you can't keep the weight down. But I've driven the 1M on the track, it's absolutely fantastic.

And the M cars don't come in automatic. Unless that was a dig at DCT, in which case it's a nonsense comment. I certainly get why people would prefer a manual on a sporting car, but the DCT is a quantum leap in racing technology, not something made for people who can't drive manual

 

I've never driver a 1er.  I have priced one out online and with my options MSRP would be about $50k. 

 

I was thinking of the E36 M3 cars which were available in A/T.  They rectified that particular error with the E46 M3

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