New Audi S4 saloon Starting at $45,900 in USA...(updated)
08-14-09, 02:37 PM
#46
Lexus Fanatic
it seems lexus is struggling to find one common design element in its cars.
whereas acura has one, but royally fked it up.
infiniti is starting to have one now, with the Essence being the unifying design. it has the trademark L shaped lights, grille shape, and it seems now they're even unifying the hood curve contours
08-14-09, 03:04 PM
#47
The BMW xDrive system uses a set of computerized wet clutch packs to route power. Although BMW calls the X-drive permenent AWD, it is essentially still a "reactive" system, it transfers power faster than the Audi system sue to the wet clutch packs. BMW uses this system to preserve the RWD-like driving dynamic of their vehicles in dry conditions.
The Audi quattro IV system uses a Torsen center differential, which is a mechanical gear set that normally sends power 50-50 front and rear but can "sense" slippage and re-route power to the other end. This is entirely mechanical and happens in real time, so there is no computer feedback loop involved as with the BMW system.
The 50-50 normal split and instant action of the torsen mean that the quattro system will generally offer superior traction in bad weather. This comes at the expense of a slight front-wheel-drive-like driving experience.
Bottom line is, X-drive is better in dry weather and Quattro is better in wet or snow conditions.
The Audi quattro IV system uses a Torsen center differential, which is a mechanical gear set that normally sends power 50-50 front and rear but can "sense" slippage and re-route power to the other end. This is entirely mechanical and happens in real time, so there is no computer feedback loop involved as with the BMW system.
The 50-50 normal split and instant action of the torsen mean that the quattro system will generally offer superior traction in bad weather. This comes at the expense of a slight front-wheel-drive-like driving experience.
Bottom line is, X-drive is better in dry weather and Quattro is better in wet or snow conditions.
08-14-09, 04:24 PM
#51
Lexus Champion
Join Date: Jul 2008
Location: Park Ridge IL
Posts: 2,485
Likes: 0
Received 0 Likes
on
0 Posts
The BMW xDrive system uses a set of computerized wet clutch packs to route power. Although BMW calls the X-drive permenent AWD, it is essentially still a "reactive" system, it transfers power faster than the Audi system sue to the wet clutch packs. BMW uses this system to preserve the RWD-like driving dynamic of their vehicles in dry conditions.
The Audi quattro IV system uses a Torsen center differential, which is a mechanical gear set that normally sends power 50-50 front and rear but can "sense" slippage and re-route power to the other end. This is entirely mechanical and happens in real time, so there is no computer feedback loop involved as with the BMW system.
The 50-50 normal split and instant action of the torsen mean that the quattro system will generally offer superior traction in bad weather. This comes at the expense of a slight front-wheel-drive-like driving experience.
Bottom line is, X-drive is better in dry weather and Quattro is better in wet or snow conditions.
The Audi quattro IV system uses a Torsen center differential, which is a mechanical gear set that normally sends power 50-50 front and rear but can "sense" slippage and re-route power to the other end. This is entirely mechanical and happens in real time, so there is no computer feedback loop involved as with the BMW system.
The 50-50 normal split and instant action of the torsen mean that the quattro system will generally offer superior traction in bad weather. This comes at the expense of a slight front-wheel-drive-like driving experience.
Bottom line is, X-drive is better in dry weather and Quattro is better in wet or snow conditions.
Thread
Thread Starter
Forum
Replies
Last Post
