A width of 100-110mm is commonly recommended for BMX racing with flat pedals. Wider platforms can enhance stability and support, but may lead to increased weight and pedal strike during corners or jumps. Narrower platforms can address clearance concerns and reduce weight, but at the cost of ergonomics and power transfer.
It's crucial to prioritize your individual needs and riding style. For example, if you're a smaller rider or frequently encounter tight spaces, a narrower platform may be beneficial. Conversely, if you're heavier or require more support during high-speed cornering, a wider platform may be more suitable.
As for specific pedal designs or brands, it's worth considering pedals with a slim profile, adjustable pins, and a durable build. Brands such as HT, DMR, and Shimano offer reliable options, but remember that what works best will depend on your unique demands and preferences as a rider.
In conclusion, there is no one-size-fits-all answer to your question. Personal experimentation and critical evaluation of your own performance are essential for determining the optimal pedal platform width for BMX racing.