Can I change tyres to bigger size in Royal Enfield Classic?

Tell me the engine specifications of Royal Enfield Classic? How is the performance of Royal Enfield Classic? What is the tyre pressure for Royal Enfield Classic? What are the variants of Royal Enfield Classic? How many colours are available in Royal Enfield Classic? What is onroad price of Royal Enfield Classic in India? What is the mileage of Royal Enfield Classic? What is the top speed of Royal Enfield Classic? What is the acceleration of Royal Enfield Classic? What is the power of Royal Enfield Classic? What is the lowest price of Royal Enfield Classic in India? What is the mileage of Royal Enfield Classic on highways and City? What is the waiting period of Royal Enfield Classic in India? Is Royal Enfield Classic available through CSD canteen? What engine oil is best for my Royal Enfield Classic? What is the price of Royal Enfield Classic in India? What is the fuel tank capacity of Royal Enfield Classic? What is the storage space of Royal Enfield Classic?

Can I upsize tyres in Royal Enfield Classic? Does Royal Enfield Classic has alloy wheels? What is the size of the front and rear tyre of Royal Enfield Classic bike? Which is the best battery for Royal Enfield Classic bike? What are the problems with the Royal Enfield Classic bike? What is the solution for starting problem in Royal Enfield Classic? What is engine capacity or cc or cubic capacity or displacement of Royal Enfield Classic Bike? What is the interest rate for Royal Enfield Classic Bike? How much is down payment when buying Royal Enfield Classic Bike? What are the special schemes for government employees or teachers or doctors and corporate discounts for buying Royal Enfield Classic Bike? What are the accessories for Royal Enfield Classic Bike? What is the resale value of Royal Enfield Classic Bike? What is road tax of Royal Enfield Classic Bike? What is the price of the front and rear tyre of Royal Enfield Classic bike?