* Specific Nova model: A Nova SS might have slightly different wheel wells than a base model.
* Tire brand and size: Different brands have different sidewall profiles, even with the same overall diameter. A wider tire with a shorter sidewall might fit where a narrower tire with a taller sidewall won't.
* Wheel offset and backspacing: The wheel's design significantly impacts how much space the tire has within the wheel well. Using aftermarket wheels with different offsets can dramatically change what fits.
* Suspension: Modifications to the suspension, even minor ones, can affect tire clearance.
While you *might* be able to squeeze in a slightly larger tire than stock with minimal or no rubbing on a stock 1970 Nova, any significant increase in size will almost certainly require modifications. This could include things like:
* Mini-tubbing: Modifying the rear wheel wells to provide more clearance.
* Fender rolling or flaring: Expanding the wheel wells to accommodate wider tires.
* Adjusting the suspension: Altering suspension components to change ride height and tire positioning.
In short: Trying to determine the absolute "biggest" tire without considering these variables is unreliable and could lead to problems like rubbing, poor handling, and even damage to the vehicle. Researching specific tire sizes and wheel offsets commonly used on modified 1970 Novas would be a much more productive approach. You'll find numerous online forums and communities dedicated to classic Chevy Novas that can provide valuable insights and real-world examples.
