33x10.5r15 on '88 SE

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33x10.5r15 on '88 SE

Postby wPine » Mon Dec 23, 2019 1:19 pm

I'm looking to buy new tires for my 88 SE 4ze1. I only have 4.56 gears and am wondering if 33x10.5r15 would be a mistake. I know it'll be slower than the stock size but does it make it undriveable? I am used to land cruisers and nissan pickups which are both slow. Also, I have 2 sets of wheels. The stock rims for an 88 and the stock rims for an 86. which would be better for larger tires. I know the 86 rims have less backspacing but im concerned bigger tires will rub the fenders with the 86 rims.
88' Trooper SE 2.6 MUA5
S O L D 95' Nissan D21 4X4 V6 5spd
'05 Chrysler 300c HEMI
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Re: 33x10.5r15 on '88 SE

Postby RickP » Mon Dec 23, 2019 3:16 pm

Auto or manual? It will definitely struggle with either transmissions, but a manual will be a little more forgiving.
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Re: 33x10.5r15 on '88 SE

Postby paulevans76 » Tue Dec 24, 2019 8:43 pm

It won't be undrivable, but you'll be downshifting at the thought of an uphill grade. I had an 88 with 35s, the 2.6, 5 speed, and 4.56 gears for few years in college, and it was no biggie. If you take it off road in any rocky/technical slow driving stuff, you'll be wishing for deeper gears, but around town it shouldn't be a big deal.
Scratch n Dent special 1991 Trooper S
3.4 V6 - Holley TBI, CompCams 252H, 1.6:1 roller rockers, +1mm DOHC pistons, MSD ignition, custom tune, "Ed Mc Special" 2.5" exhaust
MUA5 w/ 3.07's & fixed yoke
SAS - Waggy F D44 - 5.38's, RCV's, OX locker; Rodeo R 44 - Detroit, truss
Front Y-link radius arms, coils; Rear SOA, OME leaves, anti-wrap bar
35x12.50/17 General Grabber X3's on 17x9 Interco Birddogs
Trail armor and Warn XD9000
The White Whale - a temporary daily driver 1991 Trooper - 2.8 V6, MUA5 - stocker resto (sold)
1994 Samurai - 1.3 FI - OME suspension, 31's, 6.5:1 tcase, 5k milemarker SxS winch, more to come!
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Re: 33x10.5r15 on '88 SE

Postby wPine » Thu Dec 26, 2019 11:18 pm

It’s a manual. Would I be able to keep 65 going up a small grade? That’s really my only concern.
88' Trooper SE 2.6 MUA5
S O L D 95' Nissan D21 4X4 V6 5spd
'05 Chrysler 300c HEMI
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Re: 33x10.5r15 on '88 SE

Postby paulevans76 » Fri Dec 27, 2019 11:52 am

You'll probably need to drop into 4th, but it will handle it just fine. These motors enjoy the revs.
Scratch n Dent special 1991 Trooper S
3.4 V6 - Holley TBI, CompCams 252H, 1.6:1 roller rockers, +1mm DOHC pistons, MSD ignition, custom tune, "Ed Mc Special" 2.5" exhaust
MUA5 w/ 3.07's & fixed yoke
SAS - Waggy F D44 - 5.38's, RCV's, OX locker; Rodeo R 44 - Detroit, truss
Front Y-link radius arms, coils; Rear SOA, OME leaves, anti-wrap bar
35x12.50/17 General Grabber X3's on 17x9 Interco Birddogs
Trail armor and Warn XD9000
The White Whale - a temporary daily driver 1991 Trooper - 2.8 V6, MUA5 - stocker resto (sold)
1994 Samurai - 1.3 FI - OME suspension, 31's, 6.5:1 tcase, 5k milemarker SxS winch, more to come!
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Re: 33x10.5r15 on '88 SE

Postby itsmehb » Sat Dec 28, 2019 9:51 am

I always like to see the effective ratio with tire changes in size. Your effective ratio would be 3.99 and the ratio you would need to return to OEM would be 5.21. So yes, you'll be moving your rpms maybe out of the best power band for your engine and you'll be shifting into lower gears to get the engine back into its power band. But it'all look cool. Flat road driving should be ok
1990 Amigo, 2.3 5 speed (sold)
1991 Pick up (long gone)
2000 Amigo, 2.2 5 speed(sold)
1985 Trooper 1.9 4 speed (sent back to KS)
1989 Trooper RS 2.6 5 spd. Red

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Re: 33x10.5r15 on '88 SE

Postby wPine » Thu Jan 02, 2020 9:36 am

Awesome! Thank you guys for the responses. I have 86 wheels with less backspacing than stock 88 wheels. Should I use those wheels or the stock 88 wheels be better. I read that I would need more backspacing to run 33's
88' Trooper SE 2.6 MUA5
S O L D 95' Nissan D21 4X4 V6 5spd
'05 Chrysler 300c HEMI
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Re: 33x10.5r15 on '88 SE

Postby paulevans76 » Thu Jan 02, 2020 10:08 am

I would go with the 86 wheels as I think they look better, and also for the additional offset.

Both are technically too narrow for the tire to get a perfectly even contact patch at full tire pressure, but that would also help a bit off road at lower tire pressures to keep the tire on the bead. I don't think it's anything to really worry about, it's super common to run a 10.50 on the stock wheels.
Scratch n Dent special 1991 Trooper S
3.4 V6 - Holley TBI, CompCams 252H, 1.6:1 roller rockers, +1mm DOHC pistons, MSD ignition, custom tune, "Ed Mc Special" 2.5" exhaust
MUA5 w/ 3.07's & fixed yoke
SAS - Waggy F D44 - 5.38's, RCV's, OX locker; Rodeo R 44 - Detroit, truss
Front Y-link radius arms, coils; Rear SOA, OME leaves, anti-wrap bar
35x12.50/17 General Grabber X3's on 17x9 Interco Birddogs
Trail armor and Warn XD9000
The White Whale - a temporary daily driver 1991 Trooper - 2.8 V6, MUA5 - stocker resto (sold)
1994 Samurai - 1.3 FI - OME suspension, 31's, 6.5:1 tcase, 5k milemarker SxS winch, more to come!
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Re: 33x10.5r15 on '88 SE

Postby wPine » Mon Mar 02, 2020 10:55 am

Ended up running 235/85r16 on 16" snowflake wheels. Look great
88' Trooper SE 2.6 MUA5
S O L D 95' Nissan D21 4X4 V6 5spd
'05 Chrysler 300c HEMI
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Re: 33x10.5r15 on '88 SE

Postby giusedtobe » Mon Mar 02, 2020 1:56 pm

wPine wrote:Ended up running 235/85r16 on 16" snowflake wheels. Look great


Post a pic :mrgreen:
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Re: 33x10.5r15 on '88 SE

Postby wPine » Wed Mar 11, 2020 3:08 pm

Here she is
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88' Trooper SE 2.6 MUA5
S O L D 95' Nissan D21 4X4 V6 5spd
'05 Chrysler 300c HEMI
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