I have 2 rzr1000’s and 1 rzr1000xp4 sitting in my shop. All 3 are 2015 models. All 3 purchased from different dealers with many months separating build dates. All 3 have the same noise from the front drive shaft. At About 30mph the noise is very bad. The noise is not normal and will cause damage. Beware to those who think it is normal or think they don’t have the noise. I have been in dozens of rzr1000’s and they all have the driveshaft noise. Most people don’t even realize it. I’ve read posts that say it might be shock noise, which is ridiculous. To prove that it is the front drive shaft, we have removed the front shaft on all 3 machines and poof the noise is gone. This is typical Polaris quality. The front drive shaft design is a failure. They are out of phase and out of balance. Dealers say it is normal or not covered under warranty. Legal action is the only option. The good news is the rzr1000 is still an unbelievable machine in 2wd.