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This was going to be my next question to find out if people had really felt much difference in actual performance with the power it has.
On my RAM I have 800 torque and 370 HP so a little loss won't be that noticeable I feel for what I do with it. It has 3.42 gearing and would go to 3.23 with the 35s. You will lose some performance for sure, but may not really be noticeable. If it's slow to get off the line now, it will be even slower. If it has to downshift now to get up hills, it will have to sooner. Everyone's different in what they consider adequate performance. Some of these mall crawling jeeps couldn't get out of their own shadow, but most of the drivers don't care. My guess is it will do just fine. Thanks. Getting going hasn't been a problem and even my wife likes driving it when she passes people since it takes off so well. Last year I had to stop for construction at a steep grade pulling the camper. When i took off it just pulled with easy increasing speed up the hill.
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Campfire Kahuna
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Campfire Kahuna
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If you like an accurate speedometer, you'll need to change the gear... maybe. I think most of them now are computerized so you need a shop to reset it.
βIn a time of deceit telling the truth is a revolutionary act.β β George Orwell
It's not over when you lose. It's over when you quit.
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If you want 35" tires get them, you won't notice enough difference to matter.
Life is good live it while you can.
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If you like an accurate speedometer, you'll need to change the gear... maybe. I think most of them now are computerized so you need a shop to reset it. There are programs that tell a person what their speed is with different tires so I am ok with it.
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A dealership can reset your speedo, or you can do it yourself with a tuner. It is really easy to do.
I also doubt you will notice any performance difference. You might notice more squish in the sidewalls with taller tires, but that varies as much by tire as it does by height.
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Thanks, I thought about getting a tuner once the warranty is warn off.
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Your Speedo and Odo will both be off by 6%. So an indicated 25 mph would be about 26.5 actual. An indicated 60 would be 63.6, and an indicated 75 would be 79.5. You can always use a GPS to check. Most factory speedos read pretty close to actual or a bit high, so your difference may be a bit less.
ETA: I now see Rock Chuck said the same thing earlier with fewer words.
Last edited by K1500; 10/19/21.
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Right. We have a 2011 GMC that had 31's on new and now has 33". At 70 it shows 66. I didn't know this when I bought it and was surprised I was passing everyone on the freeway. Legal limit is 80 so I was going ~85. My wife was driving our Camaro following me home and had to get close to 100 (She enjoys the Camaro) to catch me since I left a bit before her and let me know what my speed was. Good thing I didn't catch the attention of the HP. Her too.
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A dealership can reset your speedo, or you can do it yourself with a tuner. It is really easy to do. You might not need to spend the big money on a tuner. There are cheaper routes to electronically adjust for taller tires. It also depends on the year of your Dodge. Newer trucks can have their shift points thrown off by not having accurate speed due to taller tires.
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What are the cheaper routes?
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I donβt know about Dodge but with Ford you can use the Forscan app and plug your laptop into your truck to adjust the speedo among other things.
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Does ford really have app called "forscan"? Is it part of the power-stroking suite?
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Campfire Kahuna
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Campfire Kahuna
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Does ford really have app called "forscan"? Is it part of the power-stroking suite? yes, they do.
βIn a time of deceit telling the truth is a revolutionary act.β β George Orwell
It's not over when you lose. It's over when you quit.
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After doing some research I found that a lot of people were complaining about the difficulty of uninstalling forscan. Apparently it can be quite painful to remove.
Honda makes another app that can remove forscan. It's called civicsision. I guess that's best done when the vehicle is brand new.
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After doing some research I found that a lot of people were complaining about the difficulty of uninstalling forscan. Apparently it can be quite painful to remove.
Honda makes another app that can remove forscan. It's called civicsision. I guess that's best done when the vehicle is brand new. LOL. Great stuff, I think a lot of guys may not have caught it!
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I drive a 2012 Ram 2500, Cummins, 6 spd auto (68RFE), 3.73 gears. I am currently running 315/70/18 Toyo M/T's. From 33 to 35 to these (36), I've noticed very little change in anything other than the speedometer. My truck is deleted and has mild tuning. I've pulled 10K pounds with it with no issue. Only thing I do is to run it in Tow/Haul when I'm running around the mountains of Tennessee and North Carolina, just to help the tranny not shift so much. Can't speak to the chain issue, but 35's shouldn't be a problem for clearance on their own.
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What are the cheaper routes? Speedometer recalibration
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If you like an accurate speedometer, you'll need to change the gear... maybe. I think most of them now are computerized so you need a shop to reset it. There are programs that tell a person what their speed is with different tires so I am ok with it. Or a GPS.
Let's Go Brandon! FJB
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