15x8 rally tire sizes

[HotWheelsBurban]

Back in the day, Dad had a '78 Sierra C15 long bed, with the factory wagon wheels. Had em painted Colonial Yellow like the rest of the truck, ran Goodyear GT Radials, white outline letters, LR60/15. Those wheels are also 15x8, tires fit nice and lowered the truck at least 4", made it easier for teenage me to climb in and out of the bed. The tire stuck out just enough to get my toe on, to hop up....
We had the truck rallys on an '84 Burb, on the back, with mudgrips on them. Prolly 31/10.50s....they were big,but would handle the weight we hauled in that truck. Needed a 3/4 ton Burb, but that came a few years later.

 

[Finkaire]

275/60/15’s on 15x8’s Coopers

 

[WesN]

Depending on how you dropped the front 5” you might have clearance issues with 15” stock wheels hit your lower control arms.

 

[oplinger]

Depends on how you drive it most. If it’s a weekend toy, shorter trips and around town, that’s not the end of the world. I debated putting 4.10s in mine, other friends run 3.73s so I split the difference. A 27” tall tire wouldn’t be the end of the world, but it’s definitely gonna rev higher

It is 100000% a weekend fun toy, but I usually have to take highways to get anywhere I am going. I ended up going with 255/60/15, hopefully it isn't terrible. I also am planning on swapping gears at some point to either 3.90 or 3.73, just to give myself a little easier ride on the highway, plus my rear isn't posi.

 

[oplinger]

Depending on how you dropped the front 5” you might have clearance issues with 15” stock wheels hit your lower control arms.

Its getting the belltech 5/7 drop. Unfortunately I'm not inclined enough to do it myself, so I have a local guy that works on my stuff. I know he thoroughly tests everything before giving it back, so if it has problems he will work it out, not just return it blindly. I guess we will cross that road if/when we come to it.

 

[maninasuit97]

I dropped my truck 5 in the front and I was so hesitant on what tires I would run. After months of research and going back and fourth. I went with the 245 60 15 in the front and love the look. It gave me plenty of clearance. If you are running aftermarket lowering spindles then you have to grind lower control arm for it to clear and not hit the wheel on the rally 15x8 TRUST ME I leaned the hard way lol

 

[TotalyHucked]

It is 100000% a weekend fun toy, but I usually have to take highways to get anywhere I am going. I ended up going with 255/60/15, hopefully it isn't terrible. I also am planning on swapping gears at some point to either 3.90 or 3.73, just to give myself a little easier ride on the highway, plus my rear isn't posi.

What motor/trans is in it? I've put ~26k on mine with the 5.3/4L65/3.90 combo and a solid 60% of that has been highway at 80+

 

[MikeB]

255-70x15 on 8" Rallys with shallow trim rings. I think 235-60 would look a bit small.

You must be registered for see images attach

You must be registered for see images attach

 

[BadBowtie]

P275/60R15 at all four corners is the path I would take....

 

[oplinger]

I dropped my truck 5 in the front and I was so hesitant on what tires I would run. After months of research and going back and fourth. I went with the 245 60 15 in the front and love the look. It gave me plenty of clearance. If you are running aftermarket lowering spindles then you have to grind lower control arm for it to clear and not hit the wheel on the rally 15x8 TRUST ME I leaned the hard way lol

THIS IS WHAT I NEEDED!!! You just gave me so much relief to my anxiety lol. I am doing the 5/7 belltech drop, and I ended up going with 255/60/15 cooper cobras. I really hope I don't regret this entire move. LOL

 

[oplinger]

What motor/trans is in it? I've put ~26k on mine with the 5.3/4L65/3.90 combo and a solid 60% of that has been highway at 80+

Currently has the factory 350 in it. I have already swapped out the 350 trans for a new built 4l60e.

 

[TotalyHucked]

Currently has the factory 350 in it. I have already swapped out the 350 trans for a new built 4l60e.

You'll be ok with any of those gear ratios then

 

[oplinger]

You'll be ok with any of those gear ratios then

I think 3.90 gears with the 4l60 and a tastefully built LS2 would be quite the nice cruiser.

 

[TotalyHucked]

I think 3.90 gears with the 4l60 and a tastefully built LS2 would be quite the nice cruiser.

Absolutely. That's essentially what I have, mine's an LH6 aluminum 5.3 from an Envoy Denali. GenIV block/rods, flat top pistons, 799/243 heads, TBSS intake/90MM TB. I put a BTR stage 4 truck cam in it with a 2800-3000 Circle D stall in the trans. We figure I'm roughly 425hp at the crank. About to pass 27k miles as of this morning, it's a fun setup for sure

 

[oplinger]

Absolutely. That's essentially what I have, mine's an LH6 aluminum 5.3 from an Envoy Denali. GenIV block/rods, flat top pistons, 799/243 heads, TBSS intake/90MM TB. I put a BTR stage 4 truck cam in it with a 2800-3000 Circle D stall in the trans. We figure I'm roughly 425hp at the crank. About to pass 27k miles as of this morning, it's a fun setup for sure

That's killer!! I just need little **** to stop popping up so I can put a hard push on saving for the swap.