need help

[freakshow346]

I PUT 20s FRONT AND BACK 255/35/ZR20- 295/35/ZR20 THE 2 TIMES I HAD THE CAR OUT IT SLOWED DOWN ON IT OWN DROVE LIKE CRAP @ THE CHECK SYSTEM ON THE MESSAGE BORED POPED UP NEVER SEEN THAT B4 FEELS LIKE THE CAR IS BEING HELD BACK ... FEEL FREE 2 CALL 201 390 7343 THANKS

[Redneck Slim]

What message are you getting on the DIC? It sounds like the traction control is being activated.

Those are tall tires for a C5. Are you trying to donk it?

[Dream Tire]

your tires are toooo tall!

If you have 20s front and rear you need:

Front 245/30R20
Rear 275/30R20