Tire Questions for '99 LS 2WD 4Dr

[C5Longhorn]

Can some explain the difference why some Blazers came with 235/70/15's and others have the 205/70/15? Was this just a tire option or was the gearing different?

I'm trying to decide on replacement tires for my '99 LS 4dr 2WD. It originally came with 205's. For the last 6 years I've been running 235/70/15 Bridgestone Duelers. I've been able to get about 65K out of them and they are due for replacement. I was thinking about going with 225/70/15 Duelers this time. This would be a little less weight yet fill in the wheel wells better than 205's.

Any recommendations would be appreciated. This is my Daily driver.

Thanks,

Rick