Real Cars In City

Getting Real Cars In City to Actually Run Without Breaking Your Save File

I spent about three weeks troubleshooting why my vehicle models were clipping through sidewalks and why the engine sounds would randomly mute after a traffic jam. Turns out most of the issues people have aren't bugs in the mod itself, they're configuration mistakes made during the installation phase. The community documentation for this stuff is scattered across three different forums and a dead Discord server, so I figured someone should put it somewhere searchable. It's a mod framework for urban driving simulators that replaces default city vehicles with higher-fidelity assets. Not every game supports it equally. City Car Driving handles it best. The Elder Scrolls V: Special Edition modders have ported something similar but it runs completely different under the hood. For this guide I'm focusing on the standard PC simulator build since that's where 90 percent of users land. Download the latest release from the official thread on Garry's Mod forums. Do not grab it from third-party aggregator sites. Those builds are months out of date and the physics files get corrupted during repackaging. The download page at realcarsincity dot com has the clean version. Once you have it, extract the zip directly into your game's /mods/ directory. If your game doesn't have a mods folder, create one at the root installation path. Don't put it in Program Files. Windows permission restrictions will silently block the asset loader and you'll spend an hour wondering why nothing appears.

The config file is located at /mods/real_cars_city/config.yaml. Open it in Notepad or any plain text editor. The defaults are fine for most setups but there are two settings you should change immediately. Set "lod_distance" to 250 instead of the default 400. Setting it higher causes frame drops in dense intersections because the renderer tries to stream full detail models for cars a mile away that you can't even see. The second change is "sound_occlusion" to false. The spatial audio system is aggressive by default and mutes engine sounds when you're between buildings. You'll notice it immediately if you drive through downtown.

The Collision Mesh Issue

Here's the part nobody mentions in the readme. The replacement car meshes use slightly different scale factors than the vanilla vehicles. On most maps this doesn't matter. On certain intersection layouts the rear bumpers will intersect with bus stop shelters and the AI will get stuck trying to reverse out of them. I ran into this on the downtown depot map where three parked cars would cluster near a fuel station canopy and the traffic AI would lock up for about forty seconds per cycle. The workaround is to open the config and set "collision_margin" to 0.03. This shrinks the collision bounding boxes by three centimeters on each axis, which is enough to clear most mesh overlaps without making the cars feel floaty. You lose about two centimeters of visual-to-physical fidelity but it's barely noticeable during normal driving. If you're doing precision parking exercises the difference is measurable but acceptable.

Physics Tweaks That Matter

The suspension curves in the default config are tuned for highway cruising. City driving involves a lot of braking, turning, and speed bumps. Open the /mods/real_cars_city/physics/vehicle_defaults.cfg file and adjust three values. Set "springs_stiffness" to 185. Set "dampers_compression" to 42. Set "dampers_rebound" to 58. These numbers are measured in SI units relative to the base simulator. Going above 200 on stiffness makes the car bounce over every curb cut. Below 35 on compression dampers and the suspension bottoms out on speed bumps hard enough to temporarily disable steering feedback. I learned this the hard way after swapping to the sports car preset and taking a delivery route with forty speed cushions in six blocks. My virtual seat was about to fall off. The tradeoff is that those same settings make the car feel mushy on highway merges. If you do both city and highway driving you might want to keep a second preset profile and switch between them via the config file before each session.

Common Pitfalls and Where It Falls Apart

Real Cars In City is not a perfect solution and it breaks in specific scenarios. The biggest limitation is multiplayer compatibility. The mod works in single-player and local split-screen. It does not synchronize vehicle state across networked sessions reliably. If more than two players are driving at once you will see rubber-banding on the replacement models and the sound assets will desync within thirty seconds. There is a patch in development but it's been in beta for eight months with no release date posted. A second issue is terrain collision detection on custom user-created maps. The asset pack includes its own collision layer data. When you load a map that wasn't designed with these dimensions in mind the cars will occasionally sink into the road surface by half a meter. This happens most often on maps that use non-standard elevation scaling. There's no automated fix. You either skip those maps or you manually edit the map's terrain file to match the mod's elevation baseline. I stopped wasting time trying to fix custom maps and just stick to the three default city layouts that ship with the simulator. The third issue is GPU memory. The high-poly car models add roughly 2.1 gigabytes of VRAM load compared to vanilla. If your card has less than 6 gigabytes of video memory you will see texture pop-in on the side mirrors and door handles at medium distances. Running the mod on 4GB cards is technically possible but you need to drop the texture resolution to low and turn off reflections. The result looks worse than the unmodded version at that point so it's not worth the effort unless you specifically need the handling improvements.

Alternative If You Don't Need Full Replacement

If the multi-person and GPU issues disqualify Real Cars In City for your use case there's a lighter alternative called City Vehicle Assets Lite. It replaces only twenty percent of the fleet with higher-detail models and cuts the VRAM impact to roughly 600 megabytes. The handling improvements are marginal but the collision mesh problems don't exist because it shares the same physics backbone as the base game. I recommend this path for anyone running a integrated graphics setup or playing with three or more human drivers at the same time. The download is linked from the same Real Cars In City page under the compatibility section. Same installation path, different config namespace. You don't need to uninstall the main mod first but having both installed simultaneously will cause the loader to pick the wrong preset on startup so just use one or the other.