[header] How to fix the alignment on a car [title] Check your tire pressure. [step] Your tires should be appropriately and evenly inflated before you proceed. [substeps] Tires that are not properly inflated may actually be the cause of your performance issues, so it's a good idea to check this first. 
You may not need to do anything else. Additionally, having your tires inflated properly is important for getting accurate reads on the measurements you'll be taking later.