A tire is inflated to a gauge pressure of 28.0 psi at 18 °C. After several hours of driving, the gauge pressure in the tire is 34.0 psi. What is the temperature in the tire in °C? Assume volume changes are negligible.

Please be as detailed as you can to show me how to perform this. The correct answer is 58.9 °C, but I do not understand how you achieve this answer. I assume you use one of the Ideal Gas Law equations, but when I try - I haven't got the right answer. Thank you :)