I agree, the are shinier side-by-side with the others with 2 coats. I think there are three factors :
1. Tahoe Tires are 4yrs old, 44k miles. For 3 of those 4 years, it was not owned by me. Probably not obsessively cared for
2. Altima tires are 1yr old, maybe 6k miles. Since new they've...