It is already available for all Android devices, including the Galaxy S3 and S4.
Currently, Asphalt 8 is not available on Mac OS. It's available for iOS, Android, BlackBerry 10, Windows, Windows Phone.
Asphalt 8 should be able to run on a Galaxy S3. The requirements for it to run properly include: 2 GB free of storage space, dual-core 1 GHz (or higher) CPU, Tegra 2, SGX 540 or Mali 400 or better, and Android 2.3 OS or newer. Without more specifics to help troubleshoot how the app is not working, it's hard to say why it's not working for you.
s1 = 21 in s2 = 2s3 - 3 in s2 + s3 > s1 2s3 - 3 + s3 > 21 3s3 - 3 > 21 3s3 > 24 s3 > 8 s2 - s3 < s1 2s3 - 3 - s3 < 21 s3 - 3 < 21 s3 < 24 So that, 8 < s3 < 24, and 2(8) - 3 < s2 < 2(24) - 3 13 < s2 < 45
Asphalt 8 will not be able to run on Windows 7. It can only run on Windows 8 and Windows Phone 8.
The 2008 Audi S4 has a 8 ft. 8.3 in. (104.3 in.) wheel base.
The 2006 Audi S4 has a 8 ft. 8.3 in. (104.3 in.) wheel base.
The 2004 Audi S4 has a 8 ft. 8.3 in. (104.3 in.) wheel base.
The 2007 Audi S4 has a 8 ft. 8.3 in. (104.3 in.) wheel base.
The 2009 Audi S4 has a 8 ft. 8.5 in. (104.5 in.) wheel base.
The 2001 Audi S4 has a 8 ft. 7 in. (103 in.) wheel base.
The 2005 Audi S4 has a 8 ft. 8.3 in. (104.3 in.) wheel base.
The 2002 Audi S4 has a 8 ft. 6.6 in. (102.6 in.) wheel base.