Let me see if I am getting you, you are asking if you should replace the 26 wheel with a 27.5, even though your post only mentioned the tyre.your front wheel is a 29er. Are you baron Frankenstein?
What wheel size is the bike built for, I should imagine it's it's a 26 so a 27.5 with any substantial tyre won't fit, it's been bastardised already by adding a 29er fork. I expect the frame could very well crack at the head tube the first time you drop off anything substantial.
Better to run bikes with the wheels that are intended unless you really know what you are doing and the bike is a multi format like some of the new 29ers that can also take 27.5+ wheel sets. Or 26 bikes with 27.5 dropouts and adequate clearance.
new member, no introduction, why is it a downhill bike? im suspicious its been made up of odd stolen parts and you're wanting to know if you can sell it. sorry if im wrong but theres some reeeeeaaally dodgy characters out there whos trade is selling stolen bikes and know nothing about what they're selling
Current Bikes, Scott Genius LT 710, Saracen Myst and Pinnical Iroco 2......Past Bikes, Commencal Meta AM V4, Commencal Meta SX V3, Canyon Nerve AM, Canyon Spectral AL, Marin Mount Vision 2009, Marin Wolf Ridge, GT Aggressor, Scott Scale..... MTB-UK
According to Halfords the bike is a 27.5 unless the older model was 26. What wheel do you have on the back if it's 26 and you don't want to buy new forks try and see if you can try somebody's front wheel in there. It should fit the only thing that you can't remedy is if the frame is a 26 that the 29 forks are adversely affecting the stack height with it the head tube angles which will cause a lot of stress around the welds there. The bottom bracket is a lot higher than it should be. If you are only riding on the road it shouldn't fall apart but it's not going to run as it was mean to do.