Help with tire size

I am driving on more dangerous and faster roads and need to regain lost acceleration with 285/70r17. Especially darting to the right when traffic is coming. I'm thinking that maybe going down to 265/70r17 SL will give me more acceleration starting from zero. Right now when I accelerate, the revs come up nice and high but it barely moves and then all of a sudden it jumps. I definitely think this may damage the engine or transmission.
You guys who drive on the street regularly with 265/70r17 or 75r16, what can you tell me about the acceleration in city and highway traffic with that size.
Any scares from the truck not accelerating suddenly turning right?

 

Shorter will an accelerate quicker, 265-70 which is the stock size. Shorter sidewall height will ride firmer.

 

Stock is 265/70r16. 265/70r17 is a bit bigger. With my current tires, if I push the pedal all the way down, the truck doesn't move. But you can hear the revs come up loud and suddenly it's like a kick in the ass. If you accelerate gradually, no problem. The only problem is that people in oncoming traffic are driving 60 miles or more. I need more pickup to get out of zero!

 

That's not the tires.

It's your transmission.

 

265/70/16 is stock on OR's. 265/65/17 is stock on sports.
But yeah, getting shorter tires should improve acceleration and narrow tires will have less resistance.
Although I went from 265/65/17 to 265/70/17 and don't notice much of a difference.

At around 3500 - 4000 RPM it's like hitting a powerband on a two stroke. Totally normal.
I'd say get an aftermarket tune. Supposedly it makes acceleration more linear, and you can choose how aggressive you want the throttle response.

 

I think the transmission works fine! I assume that to drive with these big tires in town and on highways, a re-gear is necessary. I think that somehow there is no good communication between the throttle, the computer, the transmission and the differential. If I step on the pedal and inject gas, the engine tries to accelerate but the differential can't make the truck move faster. If I accelerate gradually, it shifts well.

 

I can easily remove part of my lift kit and leave the truck wiith 1.5 of lift on the front. So I can go from 285/70r17 to 265/70r17. I just wanted to be sure with people who use this size tire, that I won't have the same problem of slow acceleration in traffic and throw my money away. I know the Tacomas are not fast, but 285 makes them much slower still to the point of becoming dangerous in fast traffic. Right now I'm living in Sugarland TX and moving around Houston a lot.

 

Not based on what I bolded of your quote in post 4.

If you mat the pedal movement should be instant, not revving and slamming.

Yes, smaller tires will improve acceleration by changing the effective gear ratio. But it's not going to solve the problem as you've written it.

 

Sorry! It is very likely that I have not explained it correctly. The truck does move, it's just too slow for the traffic coming in my direction. Usually when turning right from a traffic light or a shopping center. Then when I try to give it more gas the engine revs up, but it can't really go faster more than the oncoming traffic. I don't know, it's hard to explain when you don't have a lot of mechanical knowledge like me. Just the basics! It has no pickup to start from zero and that's what I'm looking for now.

 

Wouldnt hurt to smell your trans fluid from the dipstick & inspect the color....
Check to see If its burnt smelling....

You also make zero mention what truck you have & motor size...
I have that size tire on my 24 & the truck hauls ass...
Not an extremely large tire...

But I get the previous gens are lethargic pigs, more info would help....

 

His photo shows a 2nd gen, but only has a dipstick if it's a 2.7

Which would be another slug acceleration factor.

But as I highlighted in post 4, the description of revving up then launch has nothing to do with tires.

#savethedipsticks #dipsticksmatter

 

I don't have transmission dispstick. Prerunner 2015 V6 4.0 78000 miles

 

No, I get it...
Should rule out trans slippage...

Sometimes getting info from people is like pulling teeth, they just give enough info to get the answer they want to hear.....
Looks like we've had this truck for some time with the tires on it, all of a sudden we have an issue, we didnt have from the get go?

 

I didn't put information about the truck, because my question was not about a technical problem. But rather to know how is the performance and acceleration of similar trucks with 265/70r17 or 75r16. It was rather to people who use those tire sizes on the road and could tell me whether or not they have experienced problems accelerating, etc.
But in post #12 I put a picture and information about the truck.

 

To compare to something 'similar', always includes engine, transmission, truck model (like 4dr vs AC) and if any gear changes have been made.

Otherwise the Q is wide open for all

Good luck in your quest.

 

Certainly going from an E load to an SL load will help with all that un-sprung weight. on my 3rd gen DCLB TRD Sport 3.5 V6 I went one tire size up from stock. 265/70R17 SL in a highway orientated A/T. I noticed the difference right away from the super lightweight OEM highway tires. MPG's went down by one. However, They look way better than the OEM tires. Nothing like you describe in a performance hit tho. If your transmission if fine I think you should notice a difference going down to an SL load 265/70R17 tire in the lightest A/T you can find. Or go back to an highway tire. Pay attention to the tires weight when deciding on a tire and your usage.

 

Yes, definitely! I've had E tires in the past and while they were bulletproof, they were also super heavy and rough on the road. My current tires are 285/70r17 SL, but you can still feel the fact that the tires are oversized for these trucks. I never had any problems, because I lived in a city area where the speed limit was lower. Where I live now, people drive very fast and on the offensive. I feel a bit clumsy with my truck now. I think that many of the opinions that one reads when looking for information are based on one's own perspective. It is not the same opinion of those who live in a rural area as those who live in more urban areas. Something that if I had known before, I would never have reached almost 6 inches of lift or these tires. But hey, it's done and I will enjoy it for many years to come. Maybe it's time to turn the page!

 

You have a tranny issue. I run 285s and can literally spin them if I stomp the gas with factory gears. Have zero issues accelerating into traffic, no hard sudden shifting.

 

I run 265/75-16's and while I don't really have anything else on the Tacoma to compare them too, I don't really have any real concerns accelerating etc (pedal monster probably helps a bit too)....

 

Well, I'm not a mechanic. It could be, but I really don't think so. The truck has only 78000 miles on it and I don't abuse it much or go offroad. What has happened to me, has only happened a few times if I depress the accelerator pedal too fast when turning right. Other than that it shifts fine. But as I said, I am not a mechanic. I'll keep that in mind!