What is the cheapest tire you have in size 225 45 r18?

Based on my search, some of the most affordable 225 45 R18 tires are: The Dunlop Sport MAXX 060+ 215 55R16 97Y XL For at R2269. Though not exactly your requested size, this high-performance Dunlop tire provides great handling and braking response at an affordable price. Alternatively, the Bridgestone 225 40R19 Run Flat S001 Potenza is available for R3995. While a different size, this tire by a top brand like Bridgestone will deliver comfortable rides and durable wear. Apologies that I don't have any results specifically in 225 45 R18 listed in my search. As an experimental assistant still learning, my catalogue is limited. I hope these similar options still provide some guidance in your tire selection. Please let me know if you need any other recommendations.