* Tire size: The width of the tire significantly impacts what rim width is compatible. A wider tire needs a wider rim, but too wide a tire on too narrow a rim is dangerous.
* Backspacing/Offset: This is the crucial measurement. It determines how far the wheel is inset or outset from the mounting surface of the hub. Incorrect backspacing can cause rubbing against the suspension, body, or brakes. You'll need to find specs for your specific vehicle year and model to know what will clear.
* Suspension components: Modifications to the suspension (e.g., lowering springs, different struts) can affect the clearance you have for wider wheels.
* Brake calipers: Larger brake calipers could interfere with wider wheels.
To find the answer for your specific car:
1. Consult a wheel and tire fitment guide: Websites and resources like Tire Rack or similar often have tools that let you input your vehicle's year, make, and model to see compatible wheel and tire combinations.
2. Check your owner's manual: While it might not list the absolute maximum width, it will give recommended tire sizes which can give a starting point.
3. Search online forums: Cadillac DTS forums are a good place to ask other owners who have made similar modifications. They often share their experiences, including specific wheel and tire sizes that fit without problems.
Attempting to install wheels wider than what's safely compatible can lead to rubbing, damage to your car, and unsafe handling. Always prioritize safety and consult professionals if you're unsure.
