trailhopper 50 #1 Posted September 7, 2019 I've got a 520H with room to fit an actual 23" tire. Stock tires are the Duro 23x10.5-12 which measure 22" by my measurment. I know that many tires are an inch shorter or more, so i was curious if anyone is running a 24" tire as described on the sidewall. I'm specifically looking at the OTR Lawn Trac 24x12-12 (R1 type Ag tire) to try. I've found on some other forums people running 12" wide tires on 8.5" rims with success, but most are turf tires on ZTRs. Does anyone have an actual dimension of an Ag tire in 24" diameter? Thanks! -Scott Share this post Link to post Share on other sites
WVHillbilly520H 10,376 #2 Posted September 7, 2019 8 hours ago, trailhopper said: I've got a 520H with room to fit an actual 23" tire. Stock tires are the Duro 23x10.5-12 which measure 22" by my measurment. I know that many tires are an inch shorter or more, so i was curious if anyone is running a 24" tire as described on the sidewall. I'm specifically looking at the OTR Lawn Trac 24x12-12 (R1 type Ag tire) to try. I've found on some other forums people running 12" wide tires on 8.5" rims with success, but most are turf tires on ZTRs. Does anyone have an actual dimension of an Ag tire in 24" diameter? Thanks! -Scott I have the 23x10.50-12 OTRs on my 520s they run very close to stated size... I believe you'll be fine with the 24x12 but keep in mind with a 48" deck my left rear tire sometimes catches on the deck height adjustment bracket... Here's a little thread I started on tire sizes... 1 Share this post Link to post Share on other sites
trailhopper 50 #3 Posted September 7, 2019 I'm running a 60" mowing deck which is part of the reason for the larger tires. The 60 cuts so close, I'm trying to get it higher. Taller tires can only help. I've ordered the V61 front tires which appear to run slightly taller (I don't think 18" tires will clear the deck) so a 24" rear tire should be a good match. Based on my research, most tires are about an inch short, which "should" work out. -Scott Share this post Link to post Share on other sites
littleredrider 409 #4 Posted September 7, 2019 Adjust the wheels on the deck? Taller tires won't really do anything for cut height, in less there is no "slack" in the deck lift mechanism. Share this post Link to post Share on other sites
trailhopper 50 #5 Posted September 7, 2019 8 minutes ago, littleredrider said: Adjust the wheels on the deck? Taller tires won't really do anything for cut height, in less there is no "slack" in the deck lift mechanism. I should have elaborated. Adding another hole to the adjustment lever range, and maybe taller wheels on the deck would be the second part of the solution. My goal is to get a 4" cut from the 60" deck. I think I have right at 3" now with the deck fully lifted (no "slack"). a 1" taller tire should get me 1/2" more of deck height. Closer.... -Scott Share this post Link to post Share on other sites
trailhopper 50 #6 Posted September 28, 2019 Just an update, I put the OTR Lawn Trac 24x12.00-12 rear tires on my 520H and they fit pretty good. they measure right at 23" diameter on the 8.5" 520h rims with 10psi in them. To be as accurate as possible, I use a level when I measure from the top of the tire to the garage floor. I also changed the front tires to the Vredestein V61 tire in the 170/60-8 (16x6.50-8) size. The V61's are right at 16" with 15psi on the factory 520H front rims. In an attempt to get the highest cut possible from the 60" deck, I also replaced the 8" deck wheels with some 10" deck wheels from Harbor Freight (https://www.harborfreight.com/10-inch-x-2-1-2-half-inch-solid-rubber-tire-35459.html). In the end I got what I was trying to achieve: a 4" cut from the 60" deck (measured at the chute with the blade perpendicular to the tractor frame). If not using the 60" deck, I would have used an 18x8.00 front tire. As it is, the front tires are about an inch away from the leading edge of the 60" deck. The 24" rear tires may rub the deck during extreme articulation of the deck, but for a relatively smooth yard it should't be a problem. If using a 48" deck, I'm certain the tires would rub on the height adjustment sector on the deck. Not perfect but I'm happy and out of ideas without fabricating. -Scott 6 4 Share this post Link to post Share on other sites
AMC RULES 37,145 #7 Posted September 28, 2019 ...and it looks pretty damn good too. 1 Share this post Link to post Share on other sites
RandyLittrell 3,894 #8 Posted September 28, 2019 Those 24x12-12 OTR's look damn good!! Randy 1 Share this post Link to post Share on other sites
The Tuul Crib 7,338 #9 Posted September 28, 2019 2 minutes ago, RandyLittrell said: Those 24x12-12 OTR's look damn good!! Randy Share this post Link to post Share on other sites
trailhopper 50 #10 Posted September 29, 2019 Thanks guys! I think so too. Share this post Link to post Share on other sites
DadsPuller 36 #11 Posted September 29, 2019 That looks awesome! Share this post Link to post Share on other sites
