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Mr. Texas · 07-18-2018, 04:43 PM

I had Discount Tire order me some Firestone Indy 500 tires. Instead of ordering 245/40R20 and 275/35R20 they ordered 245/45R20 and 275/40R20. They let me know when I got there, but I didn't think my Runflats could made it another mile around the block so I had them put them on. The new tire is in total an inch taller. I think the car rides better honestly,but in the back of my mind I made a mistake now. Is the 3.8% difference in tire going to make a huge difference in acceleration and braking? I don't race the car and it is strictly a daily driver, but the thought of hindering performance kills me.

07-18-2018, 04:43 PM	#1
Mr. Texas Drives: 2016 Mosiac Black 2SS A8 Join Date: Apr 2011 Location: Richmond, Tx Posts: 127	Firehawk Indy 500 40 Series Tires I had Discount Tire order me some Firestone Indy 500 tires. Instead of ordering 245/40R20 and 275/35R20 they ordered 245/45R20 and 275/40R20. They let me know when I got there, but I didn't think my Runflats could made it another mile around the block so I had them put them on. The new tire is in total an inch taller. I think the car rides better honestly,but in the back of my mind I made a mistake now. Is the 3.8% difference in tire going to make a huge difference in acceleration and braking? I don't race the car and it is strictly a daily driver, but the thought of hindering performance kills me.