Speedtek22· Super Moderator
2022 SX Turbo - Gravity Grey / Burgundy Interior
ummm...That's what I said...speedometer reads lower than actual speed with larger tires...lolAh...no, Speed. According to my calculations, backed up by several web sites, the opposite is the case. Larger tyre overall diameter means when you are now doing say 60mph on the dial, the wheels are actually covering a greater distance, (the indicated speed relating to revolutions per minute, and always corresponds to the speedo reading ), so you are going faster than indicated. In your case it has corrected the factory under-read to almost spot on. If you had got the 245/50/R18 tyres, it would be spot-on, or you might be actually going a tad faster than indicated.
I'm researching 245/50R18s even as we speak/type... 🙏Ok, I understand what you’re saying now…I can get behind that…
Might want to check and make sure there are no warranty issues with going that large...you're pushing almost 4%...most manufacturers recommend a max oversize of under 3%.I'm researching 245/50R18s even as we speak/type... 🙏