The Spare Tire Strategy for Supply Chain Resilience

Ryan Haylett

Every three point seven years. That is how often the average business faces a supply chain disruption lasting a month or longer, according to research from the McKinsey Global Institute.

Dave Rowley

Wait, a full month? Every, what, less than four years?

Ryan Haylett

Yeah, every three to four years. And over a decade, those single disruptions can wipe out up to forty five percent of one year's EBITDA. Forty five percent, Dave.

Dave Rowley

Man. That is a massive chunk of profit just vanishing because one link in the chain snaps.

Ryan Haylett

Right, but here is the wild thing about it. Nobody sets out to build a risky supply chain. It, it, it actually happens because you are doing good business. You find a vendor who delivers on time, their quality is great, so you reward them with more volume. More volume gets you better pricing. Before you know it, you are putting all your orders through one door.

Dave Rowley

Right, it feels efficient. You get the bulk discount, you build a great relationship, you carry less administrative overhead...

Ryan Haylett

Exactly! But if you talk to M and A advisors or business lenders, the second a single supplier accounts for more than fifteen to twenty percent of your cost of goods sold, red flags go up everywhere.

Dave Rowley

Fifteen percent? That low?

Ryan Haylett

Fifteen to twenty percent, yeah. Because at that level, if that vendor gets hit with a ransomware attack or a factory fire, it is no longer an inconvenience. It threatens your whole operational continuity.

Dave Rowley

Yeah, because you cannot just jump on Google on a Tuesday afternoon and replace a specialized partner. If you are a custom manufacturer or a trade contractor running field operations, qualifying a replacement supplier takes what? Six weeks to six months?

Ryan Haylett

Six weeks to six months, easily. You have sample orders, facility audits, testing specs. If you do not have a second source already primed, you are sitting on your hands while your key accounts walk away.

Dave Rowley

Man, this hits close to home. Years ago, back when I was running design and dev sprints for client projects, we relied on this one specialized cloud rendering host. They were rock solid for three years. Never had a hiccup.

Ryan Haylett

Until they were not?

Dave Rowley

Until their main data center had an unannounced infrastructure migration that blew up our deployments for four days straight right before a major client launch. We had zero fallback. I was pulling my hair out trying to rebuild pipeline scripts on a totally new infrastructure at three in the morning.

Ryan Haylett

The classic three a.m. fire drill.

Dave Rowley

It was brutal. And the worst part was, I had assumed they were infallible just because they were reliable in the past.

Ryan Haylett

And that brings us to what I call the spare tire strategy. Think about it like driving a car. You do not drive on five tires at once, but you carry a spare in the trunk so a flat nail in the road does not strand you on the highway.

Dave Rowley

So in terms of sourcing, what does carrying a spare tire actually look like? Are we talking about splitting orders fifty fifty?

Ryan Haylett

Usually no, because fifty fifty can dilute your volume discounts too much. The sweet spot is typically an eighty twenty or eighty five fifteen split. You run eighty or eighty five percent of your volume through your primary partner to keep your scale economics, but you give that remaining fifteen or twenty percent to a qualified secondary vendor.

Dave Rowley

Ah, okay. So the secondary vendor stays warm. They already have your account set up, they know your quality standards, you have active billing with them...

Ryan Haylett

Exactly! So if primary vendor goes dark, you do not spend six months onboarding a new team. You just pick up the phone and dial up the volume on vendor number two.

Dave Rowley

That makes total sense. But wait, does not splitting your order raise your unit costs slightly on that fifteen percent?

Ryan Haylett

It might cost a tiny bit more upfront, sure. But here is the secret magic of the second source: leverage. When your primary supplier knows they are your only option, what happens at contract renewal time?

Dave Rowley

They raise prices by fifteen percent because they know you cannot leave.

Ryan Haylett

Bingo! But when they know you have an active secondary vendor who is already qualified and currently taking twenty percent of your business? Suddenly those unilateral price hikes vanish. The credible option to shift volume is the single best contract negotiation tool you will ever own.

Dave Rowley

Man, that is huge. You pay a tiny insurance premium on unit cost, but you gain massive pricing leverage and total operational safety.

Ryan Haylett

Precisely. So if you are listening to this right now and want to fix this in your own business this week, here are three quick wins.

Dave Rowley

Lay them out.

Ryan Haylett

First, run a quick audit on your cost of goods sold or critical software vendors. Flag anyone who takes up more than twenty percent of your total spend or core workflow.

Dave Rowley

Step one, find the red flags. What is step two?

Ryan Haylett

Second, pick one single critical category and issue a test order or pilot project with an alternative vendor. Get the relationship established.

Dave Rowley

And step three?

Ryan Haylett

Map out realistic onboarding timelines for your top materials. Know exactly how many weeks it would take to failover if your primary went dark tomorrow.

Dave Rowley

Building operational redundancy isn't about being paranoid, it is just about protecting what you built. Short term cost minimization looks great until the nail hits the tire.

Ryan Haylett

Amen to that. If you want help mapping out your technology architecture or business strategy for resilience, head over to modularity.us. Good chatting with you, Dave.

Dave Rowley

Talk soon, Ryan.