Edited cause I was blind and didn't read what Original Poster actually said.
Yeah, cars are always dirty in the PC version. It sux.
WTF cant you clean them. I want a spotless car at least some of the time.
I'll check the dual rear wheels. BTW, did you know that those are two differant types of semi trucks in your screenshots? Look at the rear lights. That could be why. One might have dual rear wheels and other not. I will try to find out.
Linerunner (which I think is your top screenshot): http://www.g-unleash..._linerunner.jpg
I found those links in the Car Locations FAQ on www.gamefaqs.com looks like there's links to every type of car in the game.
Edit: Ok I checked and both types of semi's only have 1 set of wheels per axel in PC version. However in your screenshot, the one that appears double, thats one of the Road Train trucks. And it has a bunch of stuff covering up the top of the wheels so it looks double on first glance. I had to look closely from various angles to see. I'm thinking if someone lookas at the PS2 closely, it might only have 1 set of wheels per axel. There's one parked in Angel Pines along the edge of town by that rectangular white structure if anyone wants to verify this in PS2 version.
Advertisements on user track radio: It happens, just not after every song. Listen a while and you'll hear. I'm not sure if its better to have ads after every few songs or every one. Some radio stations play several songs before ads. But it woulda been nice for R* to have a config option for frequency of Ads, instead of just ON/OFF.
There is at least one usually screwed up mission that I've heard of, Fender Ketchup where in cut scenes things dont happen properly and you must skip the cut scene to proceed during that mission most of the time.
I've got some images for dirty cars if anyone wants a copy pm me.
And there's some on screenshots as seen here a little:http://www.gamespot....ns.html?page=38
Delfi: Yeah there's a navel base, its near that one NRG-500 challange. Its just got one ship or sub or something and its pretty small. It also has a Patriot (hummer) parked at the end of it. Enter and you instantly get maximum wanted level. Its a pain going around that area in boat because you suddenly get wanted levels and its usually from that.
As for audio, it's probably not talking about the music. Like it supports 5.1 sound for the sound effects I belive.
Or if you were thinking about SPDIF AC3 audio. Its probably not going to happen. Because the soundcard would have to be capable of doing realtime dolby digital encoding, and there's pretty much only one consumer sound solution that did that and it was the nvidia Soundstorm in some old nforce motherboards. That could take any source (mp3, music, games, etc) and output it as dolby digital SPDIF AC3 audio.
So in general when games do surround you have to hook up analog connections to get the surround or 5.1 sound. There are some exceptions like proprietary hookups and stuff from creative with thier DIN connector on some speaker sets and some sound cards.
Edit: I checked on rockstars site. They are deceitfully ambiguous on this. They say it supports mp3 radio, and dolby digital 5.1. They dont explicitly say that the radio is 5.1
Kinda like how they say the game requires a graphics card with dx9 drivers. You'd think that means it requires a dx9 generation graphics card. But no, it works on gf 4 mx, and gf3 and even gf2 (albeit with some graphical issues on some of them). They aren't very clear in what they are saying.