The biggest wheel that can fit on a stock Yamaha golf cart, specifically the DRIVE/G29 model, is 20 inches. This applies as long as there are no additional weight-bearing modifications in the rear of the cart, such as a rear seat kit, cargo box, or any other attachments.
For the Yamaha G19-G22 models, which are older models, the maximum tire size that can fit without a lift kit is 18.5 inches.
It’s important to note that these measurements are for stock golf carts without any modifications or lifts. Lift kits can be installed to accommodate larger tires if desired.
In my personal experience, I have seen many Yamaha golf carts with 20-inch wheels on the stock DRIVE/G29 model. The larger wheels provide a more aggressive look and improved ground clearance, which can be beneficial for off-road or uneven terrain. However, it’s crucial to ensure that the additional weight from attachments or modifications in the rear does not exceed the cart’s load capacity.
To summarize, the biggest wheel size that can fit on a stock Yamaha golf cart is 20 inches for the DRIVE/G29 model and 18.5 inches for the older G19-G22 models, without any additional weight-bearing modifications.