Wheely exciting news!

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Filed under: truck by tamber
7 Mehefin 2025 @ 00:58

Some minor pottering about has been had, mostly just a few little bits of tin trimmed to size to be welded in to finish up the floor on the passenger's side, once I can bear to pick up the welder and start glueing poxy tin-plate together again.

I have also spent Sunday tinkering with the tune file for the truck, and reviewing logs, and discovered that I had the fuel injector setting in the tune set for the 280cc/min injectors I was originally going to use, not the 380cc/min injectors I actually have. This will mean a little adjustment, and probably undoing most of the tuning work I originally did. But it does explain why the truck was farting out black clouds of smoke when I first fired it up!

Tune file duly adjusted (including fidgeting with the accel enrichment), uploaded after work this afternoon, and it's made a hell of a difference. I can now hit the throttle with gusto and the truck just revs, rather than choking and hiccuping. Fantastic!

But the major news: A little before afternoon brew at work, a pallet turned up!

A pair of shrinkwrapped truck wheels on a pallet, picked up on a forklift truck

Wonder what it could be?

Looking down into the inside of the pallet of wheels

Mmmmmmmm...

After finishing out the rest of the day, and rushing down to the unit, let's try them out!

So, we start with the skinny little 6" split-rim (for the 9.00-20) An old 20 inch truck wheel, bolted up onto the wheel studs, and fitted with a 9 inch wide tyre

The old nominally 9 inch wide tyre lined up with the new 9 inch wide wheel. The tyre is a good inch narrower than the wheel.

The shiny new truck wheel next to the end of the axle

Moment of truth...

The shiny new truck wheel mounted on the wheel studs, and held on with two nuts. Alignment is ideal, and the wheel is centered.

It only goes and fits!

Blurry close-up of the end of the steering drag-link, showing about three quarters of an inch between the rib of the wheel and the ball-joint.

Plenty of clearance there! Admittedly, this is with the 25mm wheel-spacer that was fitted so they could use the same dually wheel-stud front and rear; without the spacer, I think I'd be in trouble.

New wheel on the end of the axle, photographed from in front of the truck, showing how it sticks out very slightly; though the steering is partially turned.

Details as follows: 9.00x22.5 10 Stud 1" BSF 281/335/120HDS, WheelMasters p/n 220898/1

That is, they're a 10-stud 9.00x22.5, countersunk for 1" BSF, 281mm centre bore, 335mm PCD, +106mm offset (120mm Half-Dual Spacing), and a 14mm nave plate.

The nave plate is 2mm thicker than the wheel I'm replacing, and they have 4mm less offset. In the grand scheme of things, not a big difference.

Basically, they've taken a stock wheel, which has 26mm flat-faced spigot wheel nuts, and countersunk them for the conical wheel nuts; and I don't think those pretty minor differences warranted going to the extra expense to match the original exactly. At time of writing this, I paid about £160 plus VAT per wheel.

So with it confirmed -- with me own two eyes -- that these fit, I can put tyres on the list ...and also start saving for a second pair of these wheels! (Well, eventually I'll want a total of 5; but the lack of a spare isn't a pressing issue at current!)

Those look bob on. Will you keep them silver or will they be 'backdated' a little?

I'm pretty sure I want rid of the silver, but I'm not entirely sure what route I want to take on that front, yet. I think fully-yellow would be a bit too much yellow in one place; but on the other hand, I think black would just make them disappear into the already large wheel arches. Perhaps gloss black, with a yellow pinstripe around the outside?

And big chunky tread or something a bit more road biased?

As for tread pattern, I'm thinking along the lines of the Bridgestone M+S drive pattern. Chunky, and open-shoulder. Work use them a fair bit, (it's what's across the back of work's big Volvo rotator) so availability is pretty good, and it fits the vibe. Also should be at least not totally useless if I take it on a bit of wet grass...