My new 2017 cx9 touring model with 18 inch wheels has very bumpy ride. Very uncomfortable around town or on the road. Would not purchase again for this reason. Driver seat also uncomfortable. Madza promotes the handeling of this vehicle but the handeling does not make up for ride discomfort. The ride beats you up on a trip.
cx9 bumpy ride
- Thread starter jodham
- Start date
255/60-18 tires have an outside diameter of 30"
255/50-20 tires have an O.D. of 30.2"
Both will roll as easily over bumps; the wheel size makes no difference. The 60-series tires will flex more easily over bumps offering a possible better ride. My CX-9 with 20" wheels does not have a bumpy ride. I find the seat comfortable. If it doesn't fit you with all its possible adjustments, a good upholstery shop may be able to make changes in the seat shape and reuse the original upholstery cover.
Do check the cold inflation pressure. Follow the sticker on the door jam.
255/50-20 tires have an O.D. of 30.2"
Both will roll as easily over bumps; the wheel size makes no difference. The 60-series tires will flex more easily over bumps offering a possible better ride. My CX-9 with 20" wheels does not have a bumpy ride. I find the seat comfortable. If it doesn't fit you with all its possible adjustments, a good upholstery shop may be able to make changes in the seat shape and reuse the original upholstery cover.
Do check the cold inflation pressure. Follow the sticker on the door jam.
Outside diameter doesn't make the difference, but the wheel size does when it effects the sidewall height. Generally the bigger the wheel, the shorter the sidewall height in order to maintain overall diameter.
In the case if the CX-9. The 18's DO offer a softer ride because of the fatter tires. May not be much but there's a difference.
That's why you think it's stiff and bumpy, you're used to a soft Lexus. You can't have a very soft ride and great handling. It's like complaining about your Lamborghini's fuel economy and saying "I should've stayed with the Prius".
